Add SWD pinmux to stm32f1 family

Add missing SWD pinmux definitions for STM32F1 MCU family

Author: alteman

scripts/genpinctrl/stm32f1-pinctrl-config.yaml

@@ -256,6 +256,10 @@
   match: "^USB_OTG_FS_(?:DM)?(?:DP)?(?:SOF)?(?:ID)?(?:VBUS)?$"
   mode: input
 
+- name: JTAG PORT
+  match: ^(SYS|DEBUG)_((JTMS-)?SWDIO|(JTCK-)?SWCLK|JTDI|JTDO(-TRACESWO|-SWO)?|(NJ)?JTRST)$
+  mode: alternate
+
 - name: USB
   match: "^USB_(?:DM)?(?:DP)?$"
   mode: input