dt-bindings: i2c: apple,i2c: Document Apple A7-A11, T2 compatibles

The I2C controllers found on Apple A7-A11, T2 SoCs are compatible with
the existing driver so add their per-SoC compatibles.

Signed-off-by: Nick Chan <towinchenmi@gmail.com>
Reviewed-by: Sven Peter <sven@kernel.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20250610-i2c-no-t2-v2-1-a5a71080fba9@gmail.com