ARM: tegra: pluto/dalmore: power sequence updates

ARM: tegra: pluto/dalmore: power sequence updates

use pinmux enable/disable ALT funtion to enable/disable MCLK/PBB0 sensor
mclk output.

modify imx091/imx132/ov9772 power on/off sequences according to their specs.

enable the AF regulator whenever a sensor is on (rear/front) as a workaround,
as this is required by the focuser ad5816 in the rear sensor module.

put gpio initialization into lateinit stage.

update the both dalmore/pluto board power files to adapt with the
sensor/focuser/flash kernel drivers.

bug 1060778
bug 1059684
bug 1054873

Change-Id: If67c1ad1d4ff15e04446f6d93dc75d07cda97052
Signed-off-by: Charlie Huang <chahuang@nvidia.com>
Reviewed-on: http://git-master/r/147648
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>
Rebase-Id: R8459a4b199f526f509d15e23f5d6be93361f79f7