PowerPC: dts: Pulled in kmcent2 dts files from Linux 5.10

Pulled in the kmcent2.dts and all its dependents from Linux 5.10,
commit 2c85ebc57b3e upstream. Replaced the license text with
SPDX License Identifiers.

Signed-off-by: Niel Fourie <lusus@denx.de>
Cc: Holger Brunck <holger.brunck@hitachi-powergrids.com>
Cc: Heiko Schocher <hs@denx.de>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/arch/powerpc/dts/qoriq-usb2-mph-0.dtsi b/arch/powerpc/dts/qoriq-usb2-mph-0.dtsi
new file mode 100644
index 0000000..8579cc1
--- /dev/null
+++ b/arch/powerpc/dts/qoriq-usb2-mph-0.dtsi
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * QorIQ USB Host device tree stub [ controller @ offset 0x210000 ]
+ *
+ * Copyright 2011 Freescale Semiconductor Inc.
+ */
+
+usb@210000 {
+	compatible = "fsl,mpc85xx-usb2-mph", "fsl-usb2-mph";
+	reg = <0x210000 0x1000>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	interrupts = <44 0x2 0 0>;
+};