msm: board-8064: Add GPIO controlled external regulators

Add support for the external 3.3 V and 5.0 V regulators which are
present on APQ8064 boards.  The 3.3 V regulator is enabled via
MSM GPIO 77 and the 5.0 V regulator is enabled via PMIC 8921
MPP 7.

Change-Id: I01d373e2a607b55e0cf66062cd1a04f4946d8f11
Signed-off-by: David Collins <collinsd@codeaurora.org>
5 files changed