msm: mdss: remove HIST LUT programming in mdss_hw_init

mdss_hw_init is called for every suspend/resume and ctl restore.
This causes LUT programming done by CABL/SVI to be overridden in
ctl restore cases thereby causing primary display corruption.

There is no need to program a default for HIST LUT in mdss_hw_init
as programming is done from first commit post enablement. Remove
HIST LUT programming in mdss_hw_init.

Change-Id: I1ff563b3cee8d95eb845cd7e2fa4fddf9ac4e4be
Signed-off-by: Krishna Chaitanya Parimi <cparimi@codeaurora.org>
CRs-fixed: 972755