dt-bindings: serial: samsung: Add samsung,exynos8895-uart compatible

Add dedicated samsung,exynos8895-uart compatible to the dt-schema for
representing uart of the Exynos8895 SoC.

Like GS101, it has a required DT property samsung,uart-fifosize, but
it does not exhibit the 32 bit register access limit.

Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241023090902.538040-2-ivo.ivanov.ivanov1@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/serial/samsung_uart.yaml

@@ -27,6 +27,7 @@ properties:
           - samsung,exynos4210-uart
           - samsung,exynos5433-uart
           - samsung,exynos850-uart
+          - samsung,exynos8895-uart
       - items:
           - enum:
               - samsung,exynos7-uart
@@ -160,18 +161,27 @@ allOf:
           contains:
             enum:
               - google,gs101-uart
+              - samsung,exynos8895-uart
     then:
       required:
         - samsung,uart-fifosize
       properties:
-        reg-io-width: false
-
         clocks:
           maxItems: 2
 
         clock-names:
           maxItems: 2
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - google,gs101-uart
+    then:
+      properties:
+        reg-io-width: false
+
 unevaluatedProperties: false
 
 examples: