wifi: ath12k: change soc name to device name

To have consistent nomenclature, replace the use of the term "soc"
with the term "device".

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00210-QCAHKSWPL_SILICONZ-1

Signed-off-by: Vinith Kumar R <quic_vinithku@quicinc.com>
Signed-off-by: Nithyanantham Paramasivam <quic_nithp@quicinc.com>
Signed-off-by: Raj Kumar Bhagat <quic_rajkbhag@quicinc.com>
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>