wifi: ath12k: handle ath12k_core_reset() with hardware grouping

wifi: ath12k: handle ath12k_core_reset() with hardware grouping

Currently, in ath12k_core_reset(), the device is powered up immediately
after a power down. However, with hardware grouping, when one device
asserts, all partner devices also asserts. If there is a delay in
processing these asserts, by the time this device powers up, other devices
might still be asserting, leading to an overall recovery failure.

To prevent this issue, ensure all asserts for a group are processed before
initiating the power-up sequence.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Signed-off-by: Aditya Kumar Singh <aditya.kumar.singh@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250408-fix_reboot_issues_with_hw_grouping-v4-8-95e7bf048595@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>