wifi: ath12k: Initialize desc_size through hal_init

wifi: ath12k: Initialize desc_size through hal_init

Currently desc_size uses a dedicated hal_ops API for initialization.
Combine it with other hal_params to be initialized in a
single API "hal_init" during probe time using a static array.

hal_init will be used as the common API to initialize
all hal parameters during the probe.

Add hal.c file to add hal definitions that are wifi7 specific
but common between qca and wcn chipsets.
Add hal.h header to add wifi7 specific prototypes/Macros etc

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-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: Pavankumar Nandeshwar <quic_pnandesh@quicinc.com>
Signed-off-by: Ripan Deuri <quic_rdeuri@quicinc.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20251009111045.1763001-3-quic_rdeuri@quicinc.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>