arm64: dts: ti: k3-j721e-main: Add properties to support legacy interrupts

commit 7994fc86c346b40636abc3ee3fcb1c5126444eda from
git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git



Add DT properties in PCIe DT node to support legacy interrupts.

signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Achal Verma <a-verma1@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Xulin Sun <xulin.sun@windriver.com>