Revert "media: cec: fix a deadlock situation"

This reverts commit 0ab74ae9 which is
commit a9e61076 upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: I8abbf69a8f0812b07813ba1b94b5457d4fa27f7b
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>