qcacld-3.0: Add PLD support to check if FW is down for PCIe bus

Support to check if FW is down or not for PCIe bus in PLD layer.

Change-Id: Ic09607016c430a1c4ec6c30f9b29b1ab52b4c885
CRs-fixed: 2268026

core/pld/src/pld_common.c

@@ -1494,6 +1494,8 @@ int pld_is_fw_down(struct device *dev)
 		ret = pld_snoc_is_fw_down(dev);
 		break;
 	case PLD_BUS_TYPE_PCIE:
+		ret = pld_pcie_is_fw_down(dev);
+		break;
 	case PLD_BUS_TYPE_SDIO:
 	case PLD_BUS_TYPE_USB:
 		break;

core/pld/src/pld_pcie.h

@@ -140,6 +140,11 @@ static inline void pld_pcie_link_down(struct device *dev)
 {
 }
 
+static inline int pld_pcie_is_fw_down(struct device *dev)
+{
+	return 0;
+}
+
 static inline int pld_pcie_athdiag_read(struct device *dev, uint32_t offset,
 					uint32_t memtype, uint32_t datalen,
 					uint8_t *output)
@@ -270,6 +275,11 @@ static inline void pld_pcie_link_down(struct device *dev)
 	cnss_pci_link_down(dev);
 }
 
+static inline int pld_pcie_is_fw_down(struct device *dev)
+{
+	return cnss_pci_is_device_down(dev);
+}
+
 static inline int pld_pcie_athdiag_read(struct device *dev, uint32_t offset,
 					uint32_t memtype, uint32_t datalen,
 					uint8_t *output)