regmap: merge regmap_fields_update_bits() into macro

This patch merges regmap_fields_update_bits() into macro
by using regmap_field_update_bits_base().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 5f438a4..7d3d498 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -81,6 +81,8 @@
 
 #define	regmap_fields_write(field, id, val) \
 	regmap_fields_update_bits_base(field, id, ~0, val, NULL, false, false)
+#define	regmap_fields_update_bits(field, id, mask, val)\
+	regmap_fields_update_bits_base(field, id, mask, val, NULL, false, false)
 
 #ifdef CONFIG_REGMAP
 
@@ -787,8 +789,6 @@
 			unsigned int val);
 int regmap_fields_read(struct regmap_field *field, unsigned int id,
 		       unsigned int *val);
-int regmap_fields_update_bits(struct regmap_field *field,  unsigned int id,
-			      unsigned int mask, unsigned int val);
 int regmap_fields_update_bits_base(struct regmap_field *field,  unsigned int id,
 				   unsigned int mask, unsigned int val,
 				   bool *change, bool async, bool force);