cpu/stm32f1/ldscripts: add gitignore to ignore C linker files
cpu/stm32f1/ldscripts: add gitignore to ignore C linker files

jbeyerstedt/RIOT-OTA-update,jbeyerstedt/RIOT-OTA-update,jbeyerstedt/RIOT-OTA-update,jbeyerstedt/RIOT-OTA-update,jbeyerstedt/RIOT-OTA-update