ARM: dts: AM4372: Add hwspinlock node

Add the hwspinlock device tree node for AM43xx family
of SoCs.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am4372.dtsi

@@ -351,6 +351,13 @@ gpio5: gpio@48322000 {
 			status = "disabled";
 		};
 
+		hwspinlock: spinlock@480ca000 {
+			compatible = "ti,omap4-hwspinlock";
+			reg = <0x480ca000 0x1000>;
+			ti,hwmods = "spinlock";
+			#hwlock-cells = <1>;
+		};
+
 		i2c0: i2c@44e0b000 {
 			compatible = "ti,am4372-i2c","ti,omap4-i2c";
 			reg = <0x44e0b000 0x1000>;