drm/msm/sde: fix watchdog vsync timer configuration

Fix the incorrect values for the watchdog vsync timer
with proper hexadecimal values.

Change-Id: Iddaf36018a7f6521f7da32349afd64c5ebe79060
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
Signed-off-by: Lakshmi Narayana Kalavala <lkalaval@codeaurora.org>