arm64: dts: armada-ap807: update thermal compatible

Use the correct thermal coefficients for the Armada AP807 dies.

Signed-off-by: Alex Leibovich <alexl@marvell.com>
Reviewed-by: Stefan Chulski <stefanc@marvell.com>
Tested-by: Stefan Chulski <stefanc@marvell.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Stefan Eichenberger <eichest@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>