cnss2: Provide the interface to force firmware assert

Once WLAN host driver detects bad states, it will notify platform
driver which always tries to trigger firmware assert first and then
recover from it. If firmware assert doesn't happen, directly recover
from there.

Change-Id: I7ca5db6460513af2d9d0720762ba88279435b4d7
Signed-off-by: Yue Ma <yuem@codeaurora.org>