msm: camera: icp: Enable HFI debug queue

Enabled HFI debug queue which logs the result for every
transaction with firmware. Debug msg interrupt raised
when debug queue size drops below water mark value. This
helps with debugging firmware related transactions. Also
updated processing of the queues as chunks of messages
than a single message.

To enable debug messages from firmware
echo 1 > /sys/kernel/debug/camera_icp/a5_debug_q

To enable A5 Jtag debugging
echo 1 > /sys/kernel/debug/camera_icp/a5_jtag_debug

To set debug level mask
echo $masked_value > /sys/kernel/debug/camera_icp/a5_debug_lvl

To enable trace_event
echo 1 > /sys/kernel/debug/tracing/events/camera/cam_icp_fw_dbg/enable
echo 1 > /sys/kernel/debug/tracing/tracing_on

Change-Id: I86fd4b6d345f3cb02b30d56aedf4b512d6d269e8
Signed-off-by: Lakshmi Narayana Kalavala <lkalaval@codeaurora.org>
Signed-off-by: Karthik Anantha Ram <kartanan@codeaurora.org>