mfd: pm8921-core: use pm8xxx-regulator instead of pm8921-regulator

Change the pm8921-core driver so that it registers devices for
the pm8xxx-regulator driver instead of for the pm8921-regulator
driver.

This necessitates changing board file platform data for existing
PMIC 8921 regulators so that additional pm8xxx-regulator data is
properly specified.

Change-Id: I0d48f03344265bd1b7c160bceca944f8924c694c
Signed-off-by: David Collins <collinsd@codeaurora.org>
7 files changed