Revert "ARM: dts: msm: enable display rsc for sa8155"

Revert display rsc enablement on sa8155 as a workaround
until stability issues are addressed.

This reverts commit c6950470.

Change-Id: I4dfa6d77c844c9601cc7e0ba513d2f4d39c0cbb7
Signed-off-by: Vijaykumar Badiger <vbadig@codeaurora.org>