drivers: ipm: stm32: use generic LL headers

Use generic LL headers instead of depending on soc.h.

Signed-off-by: Martin Jäger <martin@libre.solar>

drivers/ipm/ipm_stm32_ipcc.c

@@ -11,6 +11,7 @@
 #include <errno.h>
 #include <drivers/ipm.h>
 #include <soc.h>
+#include <stm32_ll_ipcc.h>
 
 #include <drivers/clock_control/stm32_clock_control.h>
 

soc/arm/st_stm32/stm32mp1/soc.h

@@ -34,10 +34,6 @@
 #include <stm32mp1xx_ll_system.h>
 #endif
 
-#ifdef CONFIG_IPM_STM32_IPCC
-#include <stm32mp1xx_ll_ipcc.h>
-#endif
-
 #endif /* !_ASMLANGUAGE */
 
 #endif /* _STM32MP1SOC_H_ */