refactor(st-pmic): use LOG_LEVEL for regulator debug output

The stpmic2_dump_regulators() function now uses LOG_LEVEL instead of
EVENT_LOG_LEVEL to align with general logging conventions.

Additionally, the guard has been moved inside the function, removing
unnecessary preprocessor checks where the function is used and thereby
improving consistency.

Change-Id: I087de124e6795a599b4f91a7613c6dfa3f76bb7a
Signed-off-by: Boerge Struempfel <boerge.struempfel@gmail.com>
diff --git a/drivers/st/pmic/stpmic2.c b/drivers/st/pmic/stpmic2.c
index 7f233db..b3af3e0 100644
--- a/drivers/st/pmic/stpmic2.c
+++ b/drivers/st/pmic/stpmic2.c
@@ -434,9 +434,9 @@
 	return -EPERM;
 }
 
-#if EVENT_LOG_LEVEL == LOG_LEVEL_VERBOSE
 void stpmic2_dump_regulators(struct pmic_handle_s *pmic)
 {
+#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
 	size_t i;
 	char const *name;
 
@@ -456,8 +456,8 @@
 		VERBOSE("PMIC regul %s: %s, %dmV\n",
 			name, state ? "EN" : "DIS", val);
 	}
-}
 #endif
+}
 
 int stpmic2_get_version(struct pmic_handle_s *pmic, uint8_t *val)
 {