icnss: Check firmware status to ignore QMI handshake

In case of Full Disk Encryption feature enablement, all core
class services including qrtr service gets restarted. When qrtr
service started wlan platform driver starts handshake with
firmware. In this case firmware rejects handshake request from
platform driver as QMI is out of sync between firmware and
platform driver. In order avoid handshake between platform driver
and firmware if it is already done, check firmware status during
indication registration request.

Change-Id: If5e2a9e90427f18304b1a9369d922f1021a9ab65
Signed-off-by: Sandeep Singh <sandsing@codeaurora.org>