msm: mdss: update xin client test points for rt/nrt vbif

Update xin client test points on debug bus for rt and
nrt vbif based on updated programming recommendation.

Change-Id: I152b485d45bd610fe281c1c81a1efe73949abe5d
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>