feat(tc): bind GPU SMMU on TC4

A SMMU-700 is used on TC4 for only GPU, on both FVP and FPGA. Add DT
binding for it.

Change-Id: I1b840676fd02c3961d4efdd769f12a4b01d459fb
Signed-off-by: Leo Yan <leo.yan@arm.com>
1 file changed