ARM: dts: keystone-k2g: Add TI SCI reset-controller node

Add a reset-controller node for managing resets of various
remote processor devices on the SoC over the Texas Instrument's
System Control Interface (TI SCI) protocol.
Signed-off-by: Andrew F. Davis <afd@ti.com>
[s-anna@ti.com: rename node name, drop obsolete header]
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>

arch/arm/boot/dts/keystone-k2g.dtsi

@@ -162,6 +162,11 @@ k2g_clks: clocks {
 				compatible = "ti,k2g-sci-clk";
 				#clock-cells = <2>;
 			};
+
+			k2g_reset: reset-controller {
+				compatible = "ti,sci-reset";
+				#reset-cells = <2>;
+			};
 		};
 	};
 };