dt-bindings: watchdog: Document ExynosAutoV920 watchdog bindings

Add "samsung-exynosautov920-wdt" compatible to the dt-schema
document. ExynosAutoV920 is new SoC for automotive, similar to
exynosautov9 but some CPU configurations are quite different.

Signed-off-by: Byoungtae Cho <bt.cho@samsung.com>
Signed-off-by: Taewan Kim <trunixs.kim@samsung.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241021063903.793166-2-trunixs.kim@samsung.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

Author: Byoungtae Cho

Documentation/devicetree/bindings/watchdog/samsung-wdt.yaml

@@ -26,6 +26,7 @@ properties:
           - samsung,exynos7-wdt                   # for Exynos7
           - samsung,exynos850-wdt                 # for Exynos850
           - samsung,exynosautov9-wdt              # for Exynosautov9
+          - samsung,exynosautov920-wdt            # for Exynosautov920
       - items:
           - enum:
               - tesla,fsd-wdt
@@ -77,6 +78,7 @@ allOf:
               - samsung,exynos7-wdt
               - samsung,exynos850-wdt
               - samsung,exynosautov9-wdt
+              - samsung,exynosautov920-wdt
     then:
       required:
         - samsung,syscon-phandle
@@ -88,6 +90,7 @@ allOf:
               - google,gs101-wdt
               - samsung,exynos850-wdt
               - samsung,exynosautov9-wdt
+              - samsung,exynosautov920-wdt
     then:
       properties:
         clocks: