ARM64: dts: marvell: Add thermal support for A7K/A8K

Add thermal DT nodes in AP806 and CP110 master/slave DTSI files.

Suggested-by: David Sniatkiwicz <davidsn@marvell.com>
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>