Add device perms for lcd density:
This allows gralloc to initialize the lcd_density value
under certain conditions.

Change-Id: Iaea46fb4d1c72fb5d80c1a5874bac318fd0d4ae3
Signed-off-by: demetris <ierokipides.dem@gmail.com>
Merge branch 'cm-11.0' into kk_mkt