rename USBRX -> CONSOLE_RX

Author: rotu

targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xB/TARGET_NUCLEO_G431RB/PinNames.h

@@ -156,8 +156,8 @@ typedef enum {
     STDIO_UART_RX = PA_3,
 #endif
 
-    USBTX = STDIO_UART_TX, // used for greentea tests
-    USBRX = STDIO_UART_RX, // used for greentea tests
+    CONSOLE_TX = STDIO_UART_TX, // used for greentea tests
+    CONSOLE_RX = STDIO_UART_RX, // used for greentea tests
 
     // Standardized LED and button names
     LED1    = PA_5, // LD2 [green]