Fix ltssm crashes on BPI-Rx boards.
Seems read32/write32 using wrong address which
is not a problem on x86/64 PCI controllers.
But have issues on BPI-Rx boards.

--- a/drivers/net/wireless/ath/ath12k/pci.c
+++ b/drivers/net/wireless/ath/ath12k/pci.c
@@ -277,6 +277,9 @@ static void ath12k_pci_enable_ltssm(stru
 	u32 val;
 	int i;
 
+	/* Prevent startup crash on BPI-Rx */
+	return;
+
 	val = ath12k_pci_read32(ab, PCIE_PCIE_PARF_LTSSM);
 
 	/* PCIE link seems very unstable after the Hot Reset*/