Revert "msm: mdss: fix issue of overlapping BW for two adjacent surfaces"

This reverts commit d8bef95ffe4ac52b029a81ab3066c2c18b7fe82d.

Change-Id: I04b8295c32f50da33d0a981246d8307a706221c3
Signed-off-by: Anusha Koduru <kanusha@codeaurora.org>
media: dvb: increase SDMX shared buffer size

A shared buffer is used to encode the command and response when
sending a command to TZ via qseecom interface.
To allow increasing the number of linear buffers the shared buffer
size is increased to accommodate the command data.
In addition, add checks to detect overflow of the shared buffer.

Change-Id: Ie006d20f3841aa7e8ea2e30bd6a5b211099936af
Signed-off-by: Gilad Broner <gbroner@codeaurora.org>