Merge pull request #3237 from javierpedrido/master

Added back USART 6 pins

Author: sg-

targets/TARGET_STM/TARGET_STM32F4/TARGET_MTS_MDOT_F411RE/PeripheralPins.c

@@ -94,12 +94,14 @@ const PinMap PinMap_PWM[] = {
 const PinMap PinMap_UART_TX[] = {
     {PA_2,  UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
     {PA_9,  UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
+    {PA_11, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
     {NC,    NC,     0}
 };
 
 const PinMap PinMap_UART_RX[] = {
     {PA_3,  UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
     {PA_10, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
+    {PA_12, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
     {NC,    NC,     0}
 };