Update drivers/comparator/comparator_stm32_comp.c

Co-authored-by: Erwan Gouriou <[email protected]>

Author: KozhinovAlexander

drivers/comparator/comparator_stm32_comp.c

@@ -49,11 +49,9 @@ LOG_MODULE_REGISTER(stm32_comp, CONFIG_COMPARATOR_LOG_LEVEL);
 
 #define STM32_COMP_DT_EXTI_LINE_NUMBER(inst)	DT_INST_PROP(inst, st_exti_line)
 
-/* Value 0 always relates to the default value of COMP PWRMODE bit field */
-#define LL_COMP_POWERMODE_DEFAULT	0
-
-#define STM32_COMP_DT_POWER_MODE(inst)	\
-	CONCAT(LL_COMP_POWERMODE_, DT_INST_STRING_TOKEN_OR(inst, st_power_mode, DEFAULT))
+	COND_CODE_1(DT_INST_NODE_HAS_PROP(inst, st_power_mode),  \
+			(CONCAT(LL_COMP_POWERMODE_, DT_INST_STRING_TOKEN(inst, st_power_mode)),   \
+			(0))
 
 struct stm32_comp_config {
 	COMP_TypeDef *comp;