dt-bindings: mmc: Add support for MT8192 SoC

MT8192 mmc host IP is compatible with MT8183, let's add support for this.
Signed-off-by: Wenbin Mei <wenbin.mei@mediatek.com>
Link: https://lore.kernel.org/r/20201014030846.12428-3-wenbin.mei@mediatek.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Documentation/devicetree/bindings/mmc/mtk-sd.yaml

@@ -29,26 +29,37 @@ properties:
       - items:
         - const: mediatek,mt7623-mmc
         - const: mediatek,mt2701-mmc
+      - items:
+        - const: mediatek,mt8192-mmc
+        - const: mediatek,mt8183-mmc
 
   clocks:
     description:
       Should contain phandle for the clock feeding the MMC controller.
     minItems: 2
-    maxItems: 4
+    maxItems: 8
     items:
       - description: source clock (required).
       - description: HCLK which used for host (required).
       - description: independent source clock gate (required for MT2712).
       - description: bus clock used for internal register access (required for MT2712 MSDC0/3).
+      - description: msdc subsys clock gate (required for MT8192).
+      - description: peripheral bus clock gate (required for MT8192).
+      - description: AXI bus clock gate (required for MT8192).
+      - description: AHB bus clock gate (required for MT8192).
 
   clock-names:
     minItems: 2
-    maxItems: 4
+    maxItems: 8
     items:
       - const: source
       - const: hclk
       - const: source_cg
       - const: bus_clk
+      - const: sys_cg
+      - const: pclk_cg
+      - const: axi_cg
+      - const: ahb_cg
 
   pinctrl-names:
     items: