Rename SPI_COUNT to DEVICE_SPI_COUNT

Avoid collision with some HALs that already define SPI_COUNT.

drivers/SPI.cpp

@@ -68,7 +68,7 @@ void SPI::_do_construct()
     _write_fill = SPI_FILL_CHAR;
 
     // Need backwards compatibility with HALs not providing API
-#ifdef SPI_COUNT
+#ifdef DEVICE_SPI_COUNT
     SPIName name = spi_get_peripheral_name(_mosi, _miso, _sclk);
 #else
     SPIName name = GlobalSPI;

drivers/SPI.h

@@ -27,12 +27,12 @@
 #include "platform/SingletonPtr.h"
 #include "platform/NonCopyable.h"
 
-#if defined MBED_CONF_DRIVERS_SPI_COUNT_MAX && SPI_COUNT > MBED_CONF_DRIVERS_SPI_COUNT_MAX
+#if defined MBED_CONF_DRIVERS_SPI_COUNT_MAX && DEVICE_SPI_COUNT > MBED_CONF_DRIVERS_SPI_COUNT_MAX
 #define SPI_PERIPHERALS_USED MBED_CONF_DRIVERS_SPI_COUNT_MAX
-#elif defined SPI_COUNT
-#define SPI_PERIPHERALS_USED SPI_COUNT
+#elif defined DEVICE_SPI_COUNT
+#define SPI_PERIPHERALS_USED DEVICE_SPI_COUNT
 #else
-/* Backwards compatibility with HALs not providing SPI_COUNT */
+/* Backwards compatibility with HALs not providing DEVICE_SPI_COUNT */
 #define SPI_PERIPHERALS_USED 1
 #endif
 
@@ -337,7 +337,7 @@ private:
 
 #if !defined(DOXYGEN_ONLY)
 protected:
-#ifdef SPI_COUNT
+#ifdef DEVICE_SPI_COUNT
     // HAL must have defined this as a global enum
     typedef ::SPIName SPIName;
 #else

hal/spi_api.h

@@ -62,7 +62,7 @@ extern "C" {
  * @{
  */
 
-#ifdef SPI_COUNT
+#ifdef DEVICE_SPI_COUNT
 /**
  * Returns a variant of the SPIName enum uniquely identifying a SPI peripheral of the device.
  * @param[in]  mosi The pin to use for MOSI

targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F429xI/TARGET_NUCLEO_F429ZI/PeripheralNames.h

@@ -57,7 +57,7 @@ typedef enum {
     UART_8 = (int)UART8_BASE
 } UARTName;
 
-#define SPI_COUNT 6
+#define DEVICE_SPI_COUNT 6
 typedef enum {
     SPI_1 = (int)SPI1_BASE,
     SPI_2 = (int)SPI2_BASE,