drm/msm/sde: enable display and apps rsc voting

SDE driver has registered two clients for bus voting
- one apps rsc; through drv driver
- second display rsc; through rsc driver
The CRTC module already calculates the bw votes for
different clients like rt, nrt and rt_rsc. This patch
registers the rsc mode on crtc and enables the crtc
perf module to vote on different clients based on
register method.

Change-Id: I7324881cd4204dec14e4b1f0a32c3faec59b1aec
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>