dt-bindings: arm: samsung: Add Samsung Galaxy Tab3 family boards

Add the compatible strings for the Samsung Galaxy Tab 3 8.0 series
of tablets.
Signed-off-by: Artur Weber <aweber.kernel@gmail.com>
Link: https://lore.kernel.org/r/20230501195525.6268-13-aweber.kernel@gmail.comSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Documentation/devicetree/bindings/arm/samsung/samsung-boards.yaml

@@ -72,6 +72,16 @@ properties:
           - const: samsung,exynos4210
           - const: samsung,exynos4
 
+      - description: Samsung Galaxy Tab3 family boards
+        items:
+          - enum:
+              - samsung,t310                    # Samsung Galaxy Tab 3 8.0 WiFi (SM-T310)
+              - samsung,t311                    # Samsung Galaxy Tab 3 8.0 3G (SM-T311)
+              - samsung,t315                    # Samsung Galaxy Tab 3 8.0 LTE (SM-T315)
+          - const: samsung,tab3
+          - const: samsung,exynos4212
+          - const: samsung,exynos4
+
       - description: Exynos4412 based boards
         items:
           - enum: