ath10k: implement ath10k_pci_soc_read/write32()

To make it easier to access SOC registers. No functional
changes.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c
index d09f8a2..5c78383 100644
--- a/drivers/net/wireless/ath/ath10k/pci.c
+++ b/drivers/net/wireless/ath/ath10k/pci.c
@@ -2454,8 +2454,7 @@
 		return ret;
 	}
 
-	chip_id = ath10k_pci_read32(ar,
-				    RTC_SOC_BASE_ADDRESS + SOC_CHIP_ID_ADDRESS);
+	chip_id = ath10k_pci_soc_read32(ar, SOC_CHIP_ID_ADDRESS);
 
 	ath10k_do_pci_sleep(ar);