ARM: dts: msm: update and enable clock_videocc device for SDM855

Update the device tree node for clock_videocc to specify a real
address and compatible string instead of dummycc.  This ensures
that consumer requests modify clock hardware state.

Change-Id: I039c08d77f51e3056fd5ccd9c24da6b5c37dd379
Signed-off-by: David Collins <collinsd@codeaurora.org>