msm: mdss: fix for black stripe flicker in browse scroll

Fix a typo that was comparing the width instead of the height
parameter that lead to black stripe flickering when scrolling on
browser.

Change-Id: I10e57f876458f46d445b3404d09a5e7606aeb666
Signed-off-by: Vinu Deokaran <vinud@codeaurora.org>
test
mdss: mdp: use file descriptor node info to track clients

FB clients are tracked using process id. The process id does
not match if open and close API callers are different. Track
the fb clients using file descriptor node id in such cases
and release all resources associated with that process id
gracefully.

CRs-fixed: 652449
Change-Id: I09c965a421197c6464a64684e9706f30df327882
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
(cherry picked from commit 2e976e26ae729f0dcdcde34451377121fdd986c4)