arm64: dts: freescale: Add Apalis iMX8QP

arm64: dts: freescale: Add Apalis iMX8QP

Add support for the Apalis iMX8QP SoM mated with Apalis Ixora and Apalis
Evaluation board.

Apalis iMX8QP is a variant of the Apalis iMX8QM, using an NXP i.MX8QP
SoC instead of the i.MX8QM. The two SoCs are pin to pin compatible, with
the i.MX8QP being a lower end variant, with a slower GPU and one Cortex
A72 core instead of two.

The two Apalis SoMs variants share the same schematics and PCB, and the
iMX8QP variant exists only on revision V1.1 of board.

Link: https://www.nxp.com/products/i.MX8
Link: https://www.toradex.com/computer-on-modules/apalis-arm-family/nxp-imx-8
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>