arm64: dts: ti: k3-am642-sk: Disable PCIe

AM642-SK has no PCIe slot. Disable it here.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20210603142251.14563-6-kishon@ti.com

arch/arm64/boot/dts/ti/k3-am642-sk.dts

@@ -367,3 +367,11 @@ mbox_m4_0: mbox-m4-0 {
 &mailbox0_cluster7 {
 	status = "disabled";
 };
+
+&pcie0_rc {
+	status = "disabled";
+};
+
+&pcie0_ep {
+	status = "disabled";
+};