dt-bindings: arm: apple: Add A9 devices

Adds the following apple,s8000 and apple,s8003 based platforms:

- iPhone 6s
- iPhone 6s Plus
- iPhone SE (2016)
- iPad 5

apple,s8000 is the Samsung A9, while apple,s8003 is the TSMC A9.

Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Nick Chan <towinchenmi@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Hector Martin <marcan@marcan.st>

Documentation/devicetree/bindings/arm/apple.yaml

@@ -31,6 +31,13 @@ description: |
 
   - iPad Air 2
 
+  Devices based on the "A9" SoC:
+
+  - iPhone 6s
+  - iPhone 6s Plus
+  - iPhone SE (2016)
+  - iPad 5
+
   Devices based on the "M1" SoC:
 
   - Mac mini (M1, 2020)
@@ -121,6 +128,28 @@ properties:
           - const: apple,t7001
           - const: apple,arm-platform
 
+      - description: Apple Samsung A9 SoC based platforms
+        items:
+          - enum:
+              - apple,j71s # iPad 5 (Wi-Fi) (S8000)
+              - apple,j72s # iPad 5 (Cellular) (S8000)
+              - apple,n66  # iPhone 6s Plus (S8000)
+              - apple,n69u # iPhone SE (S8000)
+              - apple,n71  # iPhone 6S (S8000)
+          - const: apple,s8000
+          - const: apple,arm-platform
+
+      - description: Apple TSMC A9 SoC based platforms
+        items:
+          - enum:
+              - apple,j71t # iPad 5 (Wi-Fi) (S8003)
+              - apple,j72t # iPad 5 (Cellular) (S8003)
+              - apple,n66m # iPhone 6s Plus (S8003)
+              - apple,n69  # iPhone SE (S8003)
+              - apple,n71m # iPhone 6S (S8003)
+          - const: apple,s8003
+          - const: apple,arm-platform
+
       - description: Apple M1 SoC based platforms
         items:
           - enum: