net/bnxt: add more checks during firmware reset

net/bnxt: add more checks during firmware reset

Added check for fw reset or fw errors in few more routines.
While processing the events, if it is fw fatal or non-fatal
event, there is no need to process the remaining events as
driver triggers recovery mechanism.

Also added a check for fw reset or fatal error in bnxt_disable_int()
to avoid bar access in case of fatal error.

Fixes: be14720def9c ("net/bnxt: support FW reset")
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Rahul Gupta <rahul.gupta@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>