msm: vidc: Route firmware messages to both QDSS and DBGQ

Firmware can be programmed to route messages to both QDSS
and DBGQ. Fix this in driver. Following debugfs command can
be used to achieve this.
echo 0x3 > /d/msm_vidc/fw_debug_mode

Change-Id: Ib303fbdf5119b2c4a5140eb37d67991c2a0af12f
Signed-off-by: Vinay Kalia <vkalia@codeaurora.org>