regulator: pbias: Use of_device_get_match_data

Use of_device_get_match_data to simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20190925101256.19030-1-axel.lin@ingics.com


Signed-off-by: Mark Brown <broonie@kernel.org>