core: stm32_def_build: handle dual startup files

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: fpistm

cores/arduino/stm32/stm32_def_build.h

@@ -420,13 +420,13 @@
     #define CMSIS_STARTUP_FILE "startup_stm32wb55xx_cm4.s"
   #elif defined(STM32WB5Mxx)
     #define CMSIS_STARTUP_FILE "startup_stm32wb5mxx_cm4.s"
-  #elif defined(STM32WL54xx)
+  #elif defined(STM32WL54xx) && defined(USE_CM0PLUS_STARTUP_FILE)
     #define CMSIS_STARTUP_FILE "startup_stm32wl54xx_cm0plus.s"
-  #elif defined(STM32WL54xx)
+  #elif defined(STM32WL54xx) && defined(USE_CM4_STARTUP_FILE)
     #define CMSIS_STARTUP_FILE "startup_stm32wl54xx_cm4.s"
-  #elif defined(STM32WL55xx)
+  #elif defined(STM32WL55xx) && defined(USE_CM0PLUS_STARTUP_FILE)
     #define CMSIS_STARTUP_FILE "startup_stm32wl55xx_cm0plus.s"
-  #elif defined(STM32WL55xx)
+  #elif defined(STM32WL55xx) && defined(USE_CM4_STARTUP_FILE)
     #define CMSIS_STARTUP_FILE "startup_stm32wl55xx_cm4.s"
   #elif defined(STM32WLE4xx)
     #define CMSIS_STARTUP_FILE "startup_stm32wle4xx.s"