msm: mdss: avoid fake ack and overflow errors during ESD

In the current implementation DSI driver is masking the
fake ACK and overflow errors that might occur during if
BTA mechanism is used to check ESD. But if register read
mechanism is used to check ESD, then also embedded BTA will
be triggered and fake ACK and overflow errors might be
reported. Mask the same for register based ESD check also.

Change-Id: If1ee0a7cc0171b96a3b7298aa5201372c6eb8139
Signed-off-by: Sandeep Panda <spanda@codeaurora.org>