msm: clock-mdss: use 8974 dsi pll pwr seq for samarium

The new DSI pll power up sequence causes pll lock
issues. Use the PLL power up sequence employed in 8974's
DSI PLL which iteratively attempts a list of power up
sequences if PLL fails to lock.

Change-Id: Ief97a3ad7e5c9de276f4081b76dc6a5daa7e24a9
Signed-off-by: Manoj Rao <manojraj@codeaurora.org>