[v4] wifi: ath11k: Add crash logging

[Jeff Johnson]

On 7/13/2023 5:10 PM, Arowa Suliman wrote:
> Currently, the ath11k driver does not print a crash signature when a
> crash happens. Checked by triggering a simulated crash using the command
> [1] and checking dmesg for logs.
> 
> [1] echo assert > /sys/kernel/debug/ath11k/../simulate_fw_crash
> 
> Change the crash logging from debug to informational and 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 at chromium.org>

Reviewed-by: Jeff Johnson <quic_jjohnson at quicinc.com>