dt-bindings: timer: Add Allwinner suniv timer

Add compatible string for Allwinner suniv timer which is similar to
sun4i timer.
Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

Documentation/devicetree/bindings/timer/allwinner,sun4i-timer.txt

@@ -2,7 +2,9 @@ Allwinner A1X SoCs Timer Controller
 
 Required properties:
 
-- compatible : should be "allwinner,sun4i-a10-timer"
+- compatible : should be one of the following:
+              "allwinner,sun4i-a10-timer"
+              "allwinner,suniv-f1c100s-timer"
 - reg : Specifies base physical address and size of the registers.
 - interrupts : The interrupt of the first timer
 - clocks: phandle to the source clock (usually a 24 MHz fixed clock)