recovery: auto detect fstype for sdcard

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I1331b5020e2650d207f19e857c33e2ab8279e587
Revert "Apply gamma curve to backlight"
Revert "msm7x30: update ALS overlay for new liblights"

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: Ie425ae847ecc6bfd6e303661421e420e80f2439c
Add more auto brightness levels