regulator: max77802: Use unsigned int for modes in max77802_map_mode()

All function dealing with operating modes use unsigned int for modes
so change max77802_map_mode() function signature for consistency.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: NMark Brown <broonie@kernel.org>

drivers/regulator/max77802.c

@@ -73,7 +73,7 @@ struct max77802_regulator_prv {
 	unsigned int opmode[MAX77802_REG_MAX];
 };
 
-static inline int max77802_map_mode(int mode)
+static inline unsigned int max77802_map_mode(unsigned int mode)
 {
 	return mode == MAX77802_OPMODE_NORMAL ?
 		REGULATOR_MODE_NORMAL : REGULATOR_MODE_STANDBY;