dt-bindings: clock: mediatek: document clk bindings mipi0a for Mediatek MT6765 SoC

This patch adds the binding documentation for mipi0a.

Signed-off-by: Mars Cheng <[e-mail]>
Signed-off-by: Owen Chen <[e-mail]>
Signed-off-by: Macpaul Lin <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Stephen Boyd <[e-mail]>

Documentation/devicetree/bindings/arm/mediatek/mediatek,mipi0a.txt

···
+Mediatek mipi0a (mipi_rx_ana_csi0a) controller
+============================
+
+The Mediatek mipi0a controller provides various clocks
+to the system.
+
+Required Properties:
+
+- compatible: Should be one of:
+	- "mediatek,mt6765-mipi0a", "syscon"
+- #clock-cells: Must be 1
+
+The mipi0a controller uses the common clk binding from
+Documentation/devicetree/bindings/clock/clock-bindings.txt
+The available clocks are defined in dt-bindings/clock/mt*-clk.h.
+
+The mipi0a controller also uses the common power domain from
+Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
+The available power doamins are defined in dt-bindings/power/mt*-power.h.
+
+Example:
+
+mipi0a: clock-controller@11c10000 {
+	compatible = "mediatek,mt6765-mipi0a", "syscon";
+	reg = <0 0x11c10000 0 0x1000>;
+	power-domains = <&scpsys MT6765_POWER_DOMAIN_CAM>;
+	#clock-cells = <1>;
+};