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/MAINTAINERS b/MAINTAINERS
index 7aefda9..a43fddf 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -748,6 +748,7 @@
 F:	drivers/memory/ti-aemif.c
 F:	drivers/misc/k3_avs.c
 F:	drivers/mailbox/k3-sec-procy.c
+F:	drivers/pci/pcie_cdns_ti.c
 F:	drivers/pci/pcie_dw_ti.c
 F:	drivers/phy/keystone-usb-phy.c
 F:	drivers/phy/omap-usb2-phy.c