pci: Add TI K3 Cadence PCIe Controller

Add support for the Cadence PCIe Controller present on TI's K3 SoCs.
This driver is an adaptation of the Linux driver.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 22a56f4..876a5fa 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -137,6 +137,12 @@
 	bool "GT64120 PCI support"
 	depends on MIPS
 
+config PCIE_CDNS_TI
+	bool "TI K3 PCIe support"
+	help
+	  Say Y here to enable support for the Cadence PCIe Controller
+	  on TI's K3 SoCs.
+
 config PCI_PHYTIUM
 	bool "Phytium PCIe support"
 	help