regulator: pfuze100: Fix off-by-one for max_register setting

max_register should be register count - 1.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Robin Gong <b38343@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

drivers/regulator/pfuze100-regulator.c

@@ -332,7 +332,7 @@ static int pfuze_identify(struct pfuze_chip *pfuze_chip)
 static const struct regmap_config pfuze_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
-	.max_register = PFUZE_NUMREGS,
+	.max_register = PFUZE_NUMREGS - 1,
 	.cache_type = REGCACHE_RBTREE,
 };