Revert "wifi: ath12k: use ATH12K_PCI_IRQ_DP_OFFSET for DP IRQ"

This reverts commit 1f1f7d54

. The commit
caused bootup failure on QCN9274 hw2.0 platform. Incorrect hardcode DP
irq offset overwrite the CE irq, which caused the driver to miss the
mandatory bootup message from the firmware through the CE interrupt. This
occurs because the CE count differs between platforms. The revert has no
impact since the original change was based on an incorrect assumption.

Log:

ath12k_pci 0000:06:00.0: fw_version 0x1011001d fw_build_timestamp 2022-12-02 01:16 fw_build_id QC_IMAGE_VERSION_STRING=WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
ath12k_pci 0000:06:00.0: failed to receive control response completion, polling..
ath12k_pci 0000:06:00.0: Service connect timeout
ath12k_pci 0000:06:00.0: failed to connect to HTT: -110
ath12k_pci 0000:06:00.0: failed to start core: -110

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4

Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20231214053215.2087308-1-quic_periyasa@quicinc.com