Fix STM32C051xx missing from stm32c0xx_hal_gpio_ex.h

Pin GPIO_AF0_USART2 is used by PeripheralPins.c

Signed-off-by: Nessotrin <[email protected]>

Author: nessotrin

system/Drivers/STM32C0xx_HAL_Driver/Inc/stm32c0xx_hal_gpio_ex.h

@@ -61,7 +61,7 @@ extern "C" {
 #define GPIO_AF0_OSC           ((uint8_t)0x00)  /*!< OSC (By pass and Enable) Alternate Function mapping */
 #define GPIO_AF0_TIM14         ((uint8_t)0x00)  /*!< TIM14 Alternate Function mapping */
 #endif /* !STM32C011xx */
-#if defined(STM32C031xx) || defined(STM32C071xx) || defined(STM32C091xx)  || defined(STM32C092xx)
+#if defined(STM32C031xx) || defined(STM32C051xx) || defined(STM32C071xx) || defined(STM32C091xx)  || defined(STM32C092xx)
 #define GPIO_AF0_USART2        ((uint8_t)0x00)  /*!< USART2 Alternate Function mapping */
 #endif /* STM32C031xx | STM32C071xx | STM32C091xx | STM32C092xx*/
 #if defined(SPI2)