dt-bindings: arm: apple: Add T2 devices

dt-bindings: arm: apple: Add T2 devices

Add the following apple,t8012 based platforms:

- Apple T2 MacBookPro15,2 (j132)
- Apple T2 iMacPro1,1 (j137)
- Apple T2 MacBookAir8,2 (j140a)
- Apple T2 MacBookAir8,1 (j140k)
- Apple T2 MacBookPro16,1 (j152f)
- Apple T2 MacPro7,1 (j160)
- Apple T2 Macmini8,1 (j174)
- Apple T2 iMac20,1 (j185)
- Apple T2 iMac20,2 (j185f)
- Apple T2 MacBookPro15,4 (j213)
- Apple T2 MacBookPro16,2 (j214k)
- Apple T2 MacBookPro16,4 (j215)
- Apple T2 MacBookPro16,3 (j223)
- Apple T2 MacBookAir9,1 (j230k)
- Apple T2 MacBookPro15,1 (j680)
- Apple T2 MacBookPro15,3 (j780)

These devices have no offical names, the naming scheme is from
libirecovery.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Nick Chan <towinchenmi@gmail.com>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Sven Peter <sven@svenpeter.dev>