disp: msm: sde: use high bandwidth threshold for crtc check

SDE curently uses two different bw thresholds, depending on
video and command mode panels. The lower threshold that was
being used with video mode caused perf check to fail, even
though it was still a valid functional use case. The driver
should always use the higher max bandwidth when checking
core crtc performance.

CRs-Fixed: 2470842
Change-Id: I59b85dd320ce5fcb94848d4cd4ce6d1eaf7abeaa
Signed-off-by: Nilaan Gunabalachandran <ngunabal@codeaurora.org>