wifi: ath11k: do not process consecutive RDDM event

wifi: ath11k: do not process consecutive RDDM event

Currently we do reset for each RDDM event from MHI, however there are
cases, see below log, that we get two or more consecutive events, and
it is pointless to do reset for the subsequent ones. What's more, it
makes reset process more likely to fail.

[ 1502.115876] ath11k_pci 0000:04:00.0: boot notify status reason MHI_CB_EE_RDDM
[ 1502.115884] ath11k_pci 0000:04:00.0: firmware crashed: MHI_CB_EE_RDDM
[ 1502.224041] ath11k_pci 0000:04:00.0: boot notify status reason MHI_CB_EE_RDDM
[ 1502.224050] ath11k_pci 0000:04:00.0: firmware crashed: MHI_CB_EE_RDDM

Add a check to avoid reset again and again. This is done by tracking previous
MHI status: if we receive a new RDDM event while the previous one is
also the same, we treat it as duplicate and ignore it, because normally
we should receive a MHI_CB_EE_MISSION_MODE event between them.

Tested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.23

Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20240111071406.14053-1-quic_bqiang@quicinc.com