Update boards/STM32_PRIMER2 for newer ChibiOS/RT

boards/STM32_PRIMER2/board.h

@@ -37,6 +37,8 @@
 #define GPIO_LED	GPIOE_LEDR
 #define IOPORT_LED	GPIOE
 
+/* NeuG settings for ADC2.  */
+
 /*
  * Board identifier.
  */
@@ -91,6 +93,8 @@
 /*
  * Port A setup.
  * Everything input with pull-up except:
+ * PA0  - Digital input with PullUp.  AN0
+ * PA1  - Digital input with PullUp.  AN1
  * PA2  - Alternate output  (USART2 TX).
  * PA3  - Normal input      (USART2 RX).
  * PA8  - Input with pull-down (PBUTTON).
@@ -158,4 +162,14 @@
 #define VAL_GPIOGODR            0xFFFFFFFF
 #endif
 
+#if !defined(_FROM_ASM_)
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void boardInit(void);
+#ifdef __cplusplus
+}
+#endif
+#endif /* _FROM_ASM_ */
+
 #endif /* _BOARD_H_ */