regulator: hi655x: Removed unused ctrl_regs field from struct hi655x_regulator

The ctrl_regs field is not used at all, remove it.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/hi655x-regulator.c

@@ -28,7 +28,6 @@
 struct hi655x_regulator {
 	unsigned int disable_reg;
 	unsigned int status_reg;
-	unsigned int ctrl_regs;
 	unsigned int ctrl_mask;
 	struct regulator_desc rdesc;
 };