regulator: pbias: Convert to use regmap helper functions
regulator: pbias: Convert to use regmap helper functions

This patch converts this driver to use the regmap helper functions provided by
regulator core.

Signed-off-by: Axel Lin <b6ffd6973e972cb999e8e535ab74da7fee0c035f@ingics.com>
Acked-by: Balaji T K <f0390b3e7c10fea0f9130d79020718fd0f40ef6b@ti.com>
Signed-off-by: Mark Brown <b51b9a92386687a9ac927cebfa0f978adeb8cea5@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs