mips: dts: bcm63268: add TWD block timer

BCM63268 TWD contains block with 3 timers. Add binding for it.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/boot/dts/brcm/bcm63268.dtsi

@@ -110,6 +110,11 @@ timer-mfd@10000080 {
 			reg = <0x10000080 0x30>;
 			ranges = <0x0 0x10000080 0x30>;
 
+			timer@0 {
+				compatible = "brcm,bcm6345-timer";
+				reg = <0x0 0x1c>;
+			};
+
 			wdt: watchdog@1c {
 				compatible = "brcm,bcm7038-wdt";
 				reg = <0x1c 0xc>;