Driver needs to set esync clock's parent under a gating condition,
which is not available at the point where the clocks under MDSS DSI
node are parsed. Moves the esync RCG clock to SDE DSI instead.
Change-Id: I0a94ecdf0dc3318baa0685eb78b14dbc9e052538
Signed-off-by: Kirill Shpin <quic_kshpin@quicinc.com>