Implements "auto" shutter-speed otherwise there is no turning back

This patch adds the "auto" shutter-speed after the fastest mode.

I think this is sony specific and don't know if this is the right
solution.

PS2: Cleanup
PS3: Implements auto toggle button
PS4: small cleanup
PS5: Crash fix with extra check

Change-Id: I4cd6d475d5a1817d6e39826ab73b74a11cbff9f3
Merge "Implements "auto" shutter-speed otherwise there is no turning back" into cm-10.2