ARM: dts: msm: enable HDMI PLL driver on msm8996 v3

HDMI PLL uses a different power on sequence for
msm8996 v3. Update the compatible string for the
HDMI PLL driver to use this new sequence.

Change-Id: I7b97b21b3804c9fd3a68c0983a17d2e2014d713f
Signed-off-by: Casey Piper <cpiper@codeaurora.org>