[Nuvoton] Add button names BUTTON1/BUTTON2

targets/TARGET_NUVOTON/TARGET_M2351/PinNames.h

@@ -170,6 +170,8 @@ typedef enum {
     // Button naming
     SW2 = PB_0,
     SW3 = PB_1,
+    BUTTON1 = SW2,
+    BUTTON2 = SW3,
 
 } PinName;
 

targets/TARGET_NUVOTON/TARGET_M451/PinNames.h

@@ -131,6 +131,8 @@ typedef enum {
     // Button naming
     SW2 = PA_15,
     SW3 = PA_14,
+    BUTTON1 = SW2,
+    BUTTON2 = SW3,
 
 } PinName;
 

targets/TARGET_NUVOTON/TARGET_M480/PinNames.h

@@ -136,7 +136,8 @@ typedef enum {
     SW2 = PF_11,
     SW3 = PG_5,
 #endif
-    
+    BUTTON1 = SW2,
+    BUTTON2 = SW3,
 
 } PinName;
 

targets/TARGET_NUVOTON/TARGET_NANO100/PinNames.h

@@ -128,6 +128,8 @@ typedef enum {
     // Button naming
     SW1 = PE_5,
     SW2 = PE_6,
+    BUTTON1 = SW1,
+    BUTTON2 = SW2,
 
 } PinName;
 

targets/TARGET_NUVOTON/TARGET_NUC472/PinNames.h

@@ -134,6 +134,8 @@ typedef enum {
     // Button naming
     SW1 = PC_12,
     SW2 = PC_13,
+    BUTTON1 = SW1,
+    BUTTON2 = SW2,
 
 } PinName;