mmc: Remove a not needed mmc_power_off
video: msm: Fix initial state of LCD backlight

 * For devices which use the LCD backlight (such as D2), we need
   to actually call the function which sets the brightness after
   initializing it in the probe.

Change-Id: Id6b7c0de3cd31181394c56c7f6061bca9defd861
msm_fb: display: Add minimum src/dst image size validation for MDP

MDP4 has minimum size restriction for both source and destination
height and width. Add checks to validate source and destination
layer size.

CRs-fixed: 484728
Change-Id: I8cb8d4b969cd6ab2d8e99d7ed2ebb1a4adce1ef3
Signed-off-by: Mayank Chopra <makchopra@codeaurora.org>