msm: board: Move 8960/8930 gpiomux to a dedicated file

Create a dedicated gpiomux board file, and move the gpiomux
configuration data into it. Camera gpiomux data is left in
the camera board file due to platform data scope
requirements.

Change-Id: I00570ce628e057bae77e12cc1037990eb01404ce
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
9 files changed