regmap: Fix typo in kerneldoc for regmap_update_bits()

Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

drivers/base/regmap/regmap.c

@@ -547,7 +547,7 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
 EXPORT_SYMBOL_GPL(regmap_bulk_read);
 
 /**
- * remap_update_bits: Perform a read/modify/write cycle on the register map
+ * regmap_update_bits: Perform a read/modify/write cycle on the register map
  *
  * @map: Register map to update
  * @reg: Register to update