regulator: tps65132: Fix off-by-one for .max_register setting

TPS65132_REG_CONTROL(0xFF) is the latest valid register.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/drivers/regulator/tps65132-regulator.c b/drivers/regulator/tps65132-regulator.c
index a949206..a2fc732 100644
--- a/drivers/regulator/tps65132-regulator.c
+++ b/drivers/regulator/tps65132-regulator.c
@@ -214,7 +214,7 @@
 static const struct regmap_config tps65132_regmap_config = {
 	.reg_bits	= 8,
 	.val_bits	= 8,
-	.max_register	= TPS65132_REG_CONTROL + 1,
+	.max_register	= TPS65132_REG_CONTROL,
 	.cache_type	= REGCACHE_NONE,
 	.rd_table	= &tps65132_no_reg_table,
 	.wr_table	= &tps65132_no_reg_table,