ARM: dts: at91: ksz9477_evb: Add missing timer nodes

Without this change the KSZ9477-EVB board hangs just after passing
execution flow from u-boot to Linux kernel.

This code has been copied from at91-sama5d3_xplained.dts.

Test setup: Linux 6.5-rc1
Config:     arch/arm/configs/sama5_defconfig
Toolchain:  gcc-linaro-7.3.1-2018.05-x86_64_arm-linux-gnueabi
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Link: https://lore.kernel.org/r/20230712152111.3756211-1-lukma@denx.deSigned-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>

arch/arm/boot/dts/microchip/at91-sama5d3_ksz9477_evb.dts

@@ -162,6 +162,18 @@ fixed-link {
 	};
 };
 
+&tcb0 {
+	timer0: timer@0 {
+		compatible = "atmel,tcb-timer";
+		reg = <0>;
+	};
+
+	timer1: timer@1 {
+		compatible = "atmel,tcb-timer";
+		reg = <1>;
+	};
+};
+
 &usb0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_usba_vbus>;