msm: mdss: update bandwidth calculations
msm: mdss: update bandwidth calculations

Update bandwidth calculations to correctly account for peak bandwidth
seen when a scaled frame is displayed only on a small portion of the
screen.

Change-Id: I2016976338b0345d93841db95460c87ca85df8ba
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