msm_fb: Do not check for BLT when it is already enabled.

On some cases where BLT is enabled by default & the source dimensions require
BLT mode, it returns error.

Check if BLT is disabled before calculating if it should be enabled.

Change-Id: I59f575f353d89cbe5ed3154f4c021fdcc1eff722
Signed-off-by: Aldrin <skrillization@gmail.com>
msm_fb: Skip writeback buffer init

Cases like "adb shell stop" & "adb shell start" cause the buffers to be
reinitialized, while the buffer has been already allocated.

Solves multiple issues, notably display crash no longer produces blank display.

Change-Id: I7097bc9af90a6ba2f020f911869282c39e9f9a3a
Signed-off-by: Aldrin <skrillization@gmail.com>
msm_fb: Make sure the backlight is not set to 0 at boot

Signed-off-by: Aldrin <skrillization@gmail.com>
debug_mm: Only print pr_debug and pr_info if DEBUG.

Greatly reduces the logging of sound messages in the kernel. To enable the
logging, #define DEBUG before including debug_mm.h

Signed-off-by: Aldrin <skrillization@gmail.com>
rmt_storage: Decrease logging.

Mostly, this information is useless. When debugging is needed, #define DEBUG
at the start of this file should be added.

Signed-off-by: Aldrin <skrillization@gmail.com>