Add display cesta related DT node on kera target. Move
the GDSC & MDP core clock from MDP to cesta node, as it
will be controlled through cesta. Add the cesta
related register offsets in trusted-vm DT.
Change-Id: I1f777f3402d8a4d7d57ca889206a4095447abb7d
Signed-off-by: Sailesh Reddy Male <quic_reddymal@quicinc.com>