msm: mdss: fix bug in hardware settings parsing logic
msm: mdss: fix bug in hardware settings parsing logic

Parsing logic for vbif settings incorrectly checks for variable which
has not been initialized instead of variable containing vbif length,
this may lead to vbif settings not being set properly.

Change-Id: Ieffb8856baee0f4c44419e7fa169d87e6bd5bbe4
Signed-off-by: Adrian Salido-Moreno <f4561ccbe90a02dadc9d168b29bfea0c1b57222c@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas