cnss2: 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 start wlan platform driver starts initial 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 to avoid handshake between platform driver
and firmware if it is already done, check firmware status during
indication registration request.

Change-Id: I35f049f8c2663d60cf3362ebec63ab577df01af5
Signed-off-by: Naman Padhiar <npadhiar@codeaurora.org>