dt-bindings: PCI: ti,am65: Add missing properties in endpoint mode dt-binding for TI's AM65 SoC

commit c82d771a580f6fffca470d7bf12e8c7ebf26e902 from
git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git



Add missing properties in PCIe endpoint mode dt-bindings for TI's AM65 SoC.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Achal Verma <a-verma1@ti.com>
Link: https://patchwork.kernel.org/project/linux-pci/patch/20210325090026.8843-3-kishon@ti.com/


Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Xulin Sun <xulin.sun@windriver.com>