drm/msm/dsi-staging: avoid ESD failure during first kickoff

When ESD status is read from the panel, sometimes DSI host controller
might not be initialized. During such cases, it is not accurate to
report ESD failure and it is proper to defer this check for next
ESD status read.

CRs-Fixed: 2180708
Change-Id: I63442826599992f67677b22a68ab87e713b4eeb2
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>