Current code sets config.driver_data to a zero initialized regulator
which is obviously wrong. Fix it.

Fixes: 4618119b ("regulator: hi655x: enable regulator for hi655x PMIC")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20210620132715.60215-1-axel.lin@ingics.comSigned-off-by: Mark Brown <broonie@kernel.org>