diag: dci: Check for valid peripheral feature mask

Currently diag sends control data information to all the
peripherals. In absence of one or more peripheral which doesn't
support dci functionality, unnecessary logging is happening.
This patch fixes the issue.

Change-Id: Iaaaee52f2c012f5ca11251ecd20de2cd0de69ca8
Signed-off-by: Katish Paran <kparan@codeaurora.org>