ARM: dts: msm: Update SMMU clock and gdsc info for msmtitanium

SMMU files were using msm8952 as clock info for
msmtitanium were not available. As now the clock
info is available update the file to point to the
right header. Also update clock and gdsc info for
GPU SMMU which was missing.

Change-Id: I2a3ea8086e4e0777b5d6e457be4a4c52440a6188
Signed-off-by: Susheel Khiani <skhiani@codeaurora.org>