wifi: ath11k: mhi: add a warning message for MHI_CB_EE_RDDM crash

Currently, the ath11k driver does not print a crash signature when a
MHI_CB_EE_RDDM crash happens. Checked by triggering a simulated crash using the
command and checking dmesg for logs:

echo assert > /sys/kernel/debug/ath11k/../simulate_fw_crash

Add a warning when firmware crash MHI_CB_EE_RDDM happens.

Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.23
Signed-off-by: Arowa Suliman <arowa@chromium.org>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20230714001126.463127-1-arowa@chromium.org

drivers/net/wireless/ath/ath11k/mhi.c

@@ -333,6 +333,7 @@ static void ath11k_mhi_op_status_cb(struct mhi_controller *mhi_cntrl,
 		ath11k_warn(ab, "firmware crashed: MHI_CB_SYS_ERROR\n");
 		break;
 	case MHI_CB_EE_RDDM:
+		ath11k_warn(ab, "firmware crashed: MHI_CB_EE_RDDM\n");
 		if (!(test_bit(ATH11K_FLAG_UNREGISTERING, &ab->dev_flags)))
 			queue_work(ab->workqueue_aux, &ab->reset_work);
 		break;