msm: board-qrd7627a: Regulator configuration for 8625Q device

The acpuclock driver for 8625Q obtain the voltage required
to drive the acpu clock frequencies. This patch adds
the regulator support for the 8625Q device.

Change-Id: Id1b8aa06feb5ce56b6207641321db85a10b5a8d7
Signed-off-by: Trilok Soni <tsoni@codeaurora.org>
Signed-off-by: Utsab Bose <ubose@codeaurora.org>