thermal: of: Extend of-thermal.c to provide check if trip point is valid

This patch extends the of-thermal.c to provide check if trip point is
valid.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index 1cc5041..58a0dfa 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -90,6 +90,7 @@
 int of_parse_thermal_zones(void);
 void of_thermal_destroy_zones(void);
 int of_thermal_get_ntrips(struct thermal_zone_device *);
+bool of_thermal_is_trip_valid(struct thermal_zone_device *, int);
 #else
 static inline int of_parse_thermal_zones(void) { return 0; }
 static inline void of_thermal_destroy_zones(void) { }
@@ -97,6 +98,11 @@
 {
 	return 0;
 }
+static inline bool of_thermal_is_trip_valid(struct thermal_zone_device *tz,
+					    int trip)
+{
+	return 0;
+}
 #endif
 
 #endif /* __THERMAL_CORE_H__ */