MIPS: BMIPS: Add Broadcom STB wake-up timer nodes

Adds wake-up timer device nodes to BCM7xxx MIPS based SoCs.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17728/
Signed-off-by: James Hogan <jhogan@kernel.org>

arch/mips/boot/dts/brcm/bcm97435svmb.dts

@@ -120,3 +120,7 @@
 &mspi {
 	status = "okay";
 };
+
+&waketimer {
+	status = "okay";
+};