regulator: core: Correct type of mode in regulator_mode_constrain

Every function handling the mode within the regulator core uses an unsigned
int for mode, except for regulator_mode_constrain. This patch changes the
type of mode within regulator_mode_constrain which fixes several instances
where we are passing pointers to unsigned ints then treating them as an int
within this function.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/core.c

@@ -293,7 +293,8 @@ static int regulator_check_current_limit(struct regulator_dev *rdev,
 }
 
 /* operating mode constraint check */
-static int regulator_mode_constrain(struct regulator_dev *rdev, int *mode)
+static int regulator_mode_constrain(struct regulator_dev *rdev,
+				    unsigned int *mode)
 {
 	switch (*mode) {
 	case REGULATOR_MODE_FAST: