Merge pull request rogerclarkmelbourne#419 from stevstrong/patch-10

Update wirish_debug.cpp - to ONLY reserve SWD pa13 & pa14 SWD, rather than all JTAG debug pins, which also include PB3 and PB4

Author: rogerclarkmelbourne

Diff for: STM32F1/cores/maple/stm32f1/wirish_debug.cpp

@@ -37,5 +37,5 @@ void disableDebugPorts(void) {
 }
 
 void enableDebugPorts(void) {
-    afio_cfg_debug_ports(AFIO_DEBUG_FULL_SWJ);
+    afio_cfg_debug_ports(AFIO_DEBUG_SW_ONLY);
 }