diag: Define new IPC mask for command request and response flow

New IPC logging mask for printing command request from tool and
responses from peripherals when enabled is defined and debug
logs with the masks are added.

Change-Id: I20546eeb3f50dfe1c2fe651ea738ed3cc43253f7
Signed-off-by: Manoj Prabhu B <bmanoj@codeaurora.org>