Add CAN2 missing pins for connector CN12

Author: adustm

targets/TARGET_STM/TARGET_STM32F4/TARGET_DISCO_F469NI/PeripheralPins.c

@@ -328,11 +328,14 @@ const PinMap PinMap_SPI_SSEL[] = {
 };
 
 const PinMap PinMap_CAN_RD[] = {
-    {PB_8  , CAN_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
+    {PB_5,  CAN_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
+    {PB_8,  CAN_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
+    {PB_12, CAN_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
     {NC,    NC,    0}
 };
 
 const PinMap PinMap_CAN_TD[] = {
-    {PB_9  , CAN_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
+    {PB_9,  CAN_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
+    {PB_13, CAN_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
     {NC,    NC,    0}
 };