[WIP] galaxys2-common: advanced device settings

Taken the SIII device settings and removed anything that is not
supported by any variant of our kernel. Leaving only mDNIe and
button back light.

Work in progress: builds and runs fine and can be cherry-picked,
but need to test more and remove some more stuff that isn't relevant.
Need to reorganize UI because it now looks silly with just one tab.
Need to find out what it actually does in the kernel. Need some
input on whether it belongs elsewhere. Need to fix multi-user. Also
sometimes it doesn't restore ok.

PS2: Still WIP. Removed button back light controls.
Aligned options and defaults with kernel.
PS3: Fix errors on accessibility setting.

Change-Id: If6a325280bc4cdad8a25deb2ad7b68a7b8018782
[WIP] galaxys2-common: advanced device settings

Taken the SIII device settings and removed anything that is not
supported by any variant of our kernel. Leaving only mDNIe and
button back light.
Work in progress: builds and runs fine and can be cherry-picked,
but need to test more and remove some more stuff that isn't relevant.
Need to reorganize UI because it now looks silly with just one tab.
Need to find out what it actually does in the kernel. Need some
input on whether it belongs elsewhere. Need to fix multi-user. Also
sometimes it doesn't restore ok.
PS2: Still WIP. Removed button back light controls.
Aligned options and defaults with kernel.
PS3: Fix errors on accessibility setting.