In cds_trigger_recovery_handler, Host driver first set flag recovering
before cds_force_assert_target. For Rome, ol_target_failure run when
FW crash, Self-Recovery stop when detect flag recoverying be set
Add CDS_DRIVER_STATE_ASSERTING_TARGET to record Host asserting in
cds_force_assert_target. Skip recovering check in ol_target_failure
if detect this flag.
Change-Id: I290e2f21bd0bca6dc6d76de43de4f8dd801d7ff5