drm/bridge: fix CEC message not sent issue
Buffer allocated by LT9611UXC is not enough to read CEC messages.
Some TVs when broadcast a vendor specified CEC message which
includes 9 bytes, this was causing kernel panic.
The patch corrects the buffer size, and do message length check
when read message from LT9611UXC.
Change-Id: Ib775a50e312f8637f076a40909bc1f81000da87a
Signed-off-by:
Pritama Biswas <quic_pritbisw@quicinc.com>
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