icnss: Consider recovery as FW down

When WLAN driver encounters FW timeout scenarios, it may check if the
FW is down by calling icnss_is_fw_down() API. Recovery should also be
considered as FW down, as FW has not completely recovered and ready
for WLAN communication.

Change-Id: I4c9e15aacc5605dca823e2cfcbf6f87152aaa78e
CRs-Fixed: 2218795
Signed-off-by: Sameer Thalappil <sameert@codeaurora.org>