fixe F103 RB, add missing pin (PC5_2)

Signed-off-by: dhl <damien.helis@wi6labs.com>

Author: damien16130

variants/NUCLEO_F103RB/variant.cpp

@@ -88,7 +88,8 @@ const PinName digitalPin[] = {
   PC_2,  //D55/A9 = D28
   PC_3,  //D56/A10 = D29
   PB_1,  //D57/A11 = D41
-  PC_4   //D58/A12 = D45
+  PC_4,  //D58/A12 = D45
+  PC_5   //D59/A13 = D35
 };
 
 #ifdef __cplusplus

variants/NUCLEO_F103RB/variant.h

@@ -100,13 +100,14 @@ enum {
   PC3_2,//D56/A10 = D29
   PB1_2,//D57/A11 = D41
   PC4_2,//D58/A12 = D45
+  PC5_2,//D59/A13 = D35
   PEND
 };
 
 enum {
   A_START_AFTER = D45,
   A0,  A1,  A2,  A3,  A4,  A5,  A6,  A7,  A8,  A9,
-  A10, A11, A12,
+  A10, A11, A12, A13,
   AEND
 };