ARM: dts: msm: enable display rsc for sm8150

This change enables disp rsc for fine grained power management. This
change adds additional clocks required for mode2 entry and exit sequences
for this hardware revision.

Change-Id: I10330536638e7bec6bef1d6242a4174b9b07d9c4
Signed-off-by: Abhijit Kulkarni <kabhijit@codeaurora.org>