arm: dts: am437x-sk-evm: add tick-timer to chosen node

Specify which timer to be used as tick-timer in chosen node.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

arch/arm/dts/am437x-sk-evm.dts

@@ -26,6 +26,7 @@
 
 	chosen {
 		stdout-path = &uart0;
+		tick-timer = &timer2;
 	};
 
 	backlight {