arm64: dts: apple: Add J314 and J316 devicetrees

These are the 14-inch and 16-inch 2021 MacBooks, in both M1 Pro and M1
Max variants (t6000 and t6001).

Signed-off-by: Janne Grunau <j@jannau.net>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>