FUTURE_SEQUANA: Clean up "unused variable" compiler warnings

Clean up compiler warnings coming from PDL read-out of peripheral
interrupt status registers.

targets/TARGET_Cypress/TARGET_PSOC6_FUTURE/device/drivers/include/cy_ctdac.h

@@ -928,6 +928,7 @@ __STATIC_INLINE void Cy_CTDAC_ClearInterrupt(CTDAC_Type *base)
 
     /* Dummy read for buffered writes. */
     unused = base->INTR;
+    (void)unused;
 }
 
 /*******************************************************************************

targets/TARGET_Cypress/TARGET_PSOC6_FUTURE/device/drivers/include/cy_gpio.h

@@ -1577,6 +1577,7 @@ __STATIC_INLINE void Cy_GPIO_ClearInterrupt(GPIO_PRT_Type* base, uint32_t pinNum
 
     /* This read ensures that the initial write has been flushed out to the hardware */
     unused = base->INTR;
+    (void)unused;
 }
 
 

targets/TARGET_Cypress/TARGET_PSOC6_FUTURE/device/drivers/include/cy_ipc_drv.h

@@ -622,6 +622,7 @@ __STATIC_INLINE void  Cy_IPC_Drv_ClearInterrupt(IPC_INTR_STRUCT_Type* base, uint
     base->INTR =  _VAL2FLD(IPC_INTR_STRUCT_INTR_NOTIFY,  ipcNotifyMask) |
                   _VAL2FLD(IPC_INTR_STRUCT_INTR_RELEASE, ipcReleaseMask);
     unused = base->INTR;  /* Read the register to flush the cache */
+    (void)unused;
 }
 
 /** \} group_ipc_functions */

targets/TARGET_Cypress/TARGET_PSOC6_FUTURE/device/drivers/include/cy_sar.h

@@ -1564,6 +1564,7 @@ __STATIC_INLINE void Cy_SAR_ClearInterrupt(SAR_Type *base, uint32_t intrMask)
 
     /* Dummy read for buffered writes. */
     unused = base->INTR;
+    (void)unused;
 }
 
 /*******************************************************************************
@@ -1720,6 +1721,7 @@ __STATIC_INLINE void Cy_SAR_ClearRangeInterrupt(SAR_Type *base, uint32_t chanMas
 
     /* Dummy read for buffered writes. */
     unused = base->RANGE_INTR;
+    (void)unused;
 }
 
 /*******************************************************************************
@@ -1863,6 +1865,7 @@ __STATIC_INLINE void Cy_SAR_ClearSatInterrupt(SAR_Type *base, uint32_t chanMask)
 
     /* Dummy read for buffered writes. */
     unused = base->SATURATE_INTR;
+    (void)unused;
 }
 
 /*******************************************************************************

targets/TARGET_Cypress/TARGET_PSOC6_FUTURE/device/drivers/include/cy_scb_common.h

@@ -666,6 +666,7 @@ __STATIC_INLINE void Cy_SCB_ClearRxFifo(CySCB_Type* base)
     base->RX_FIFO_CTRL &= (uint32_t) ~SCB_RX_FIFO_CTRL_CLEAR_Msk;
 
     unused = base->RX_FIFO_CTRL;
+    (void)unused;
 }
 
 
@@ -793,6 +794,7 @@ __STATIC_INLINE void Cy_SCB_ClearTxFifo(CySCB_Type *base)
     base->TX_FIFO_CTRL &= (uint32_t) ~SCB_TX_FIFO_CTRL_CLEAR_Msk;
 
     unused = base->TX_FIFO_CTRL;
+    (void)unused;
 }
 
 
@@ -968,6 +970,7 @@ __STATIC_INLINE void Cy_SCB_ClearRxInterrupt(CySCB_Type *base, uint32_t interrup
 
     base->INTR_RX = interruptMask;
     unused = base->INTR_RX;
+    (void)unused;
 }
 
 
@@ -1116,6 +1119,7 @@ __STATIC_INLINE void Cy_SCB_ClearTxInterrupt(CySCB_Type *base, uint32_t interrup
 
     base->INTR_TX = interruptMask;
     unused = base->INTR_TX;
+    (void)unused;
 }
 
 
@@ -1255,6 +1259,7 @@ __STATIC_INLINE void Cy_SCB_ClearMasterInterrupt(CySCB_Type *base, uint32_t inte
 
     base->INTR_M = interruptMask;
     unused = base->INTR_M;
+    (void)unused;
 }
 
 
@@ -1396,6 +1401,7 @@ __STATIC_INLINE void Cy_SCB_ClearSlaveInterrupt(CySCB_Type *base, uint32_t inter
 
     base->INTR_S = interruptMask;
     unused = base->INTR_S;
+    (void)unused;
 }
 
 
@@ -1534,6 +1540,7 @@ __STATIC_INLINE void Cy_SCB_ClearI2CInterrupt(CySCB_Type *base, uint32_t interru
 
     base->INTR_I2C_EC = interruptMask;
     unused = base->INTR_I2C_EC;
+    (void)unused;
 }
 
 
@@ -1649,6 +1656,7 @@ __STATIC_INLINE void Cy_SCB_ClearSpiInterrupt(CySCB_Type *base, uint32_t interru
 
     base->INTR_SPI_EC = interruptMask;
     unused = base->INTR_SPI_EC;
+    (void)unused;
 }
 
 /** \cond INTERNAL */
@@ -1734,6 +1742,7 @@ __STATIC_INLINE void Cy_SCB_FwBlockReset(CySCB_Type *base)
     base->CTRL |= (uint32_t)  SCB_CTRL_ENABLED_Msk;
 
     unused = base->CTRL;
+    (void)unused;
 }
 
 

targets/TARGET_Cypress/TARGET_PSOC6_FUTURE/device/drivers/include/cy_sysclk.h

@@ -2085,6 +2085,7 @@ __STATIC_INLINE cy_en_sysclk_status_t
                             _VAL2FLD(PERI_DIV_CMD_TYPE_SEL, dividerType) |
                             _VAL2FLD(PERI_DIV_CMD_DIV_SEL,  dividerNum);
             unused = PERI->DIV_CMD; /* dummy read to handle buffered writes */
+            (void)unused;
             retval = CY_SYSCLK_SUCCESS;
         }
     }

targets/TARGET_Cypress/TARGET_PSOC6_FUTURE/device/drivers/include/cy_tcpwm.h

@@ -539,6 +539,7 @@ __STATIC_INLINE void Cy_TCPWM_ClearInterrupt(TCPWM_Type *base, uint32_t cntNum,
 
     base->CNT[cntNum].INTR = source;
     unused = base->CNT[cntNum].INTR;
+    (void)unused;
 }