ARM: dts: OMAP443x: Thermal: Add slope and offset values

Currently the slope and offset values for calculating the
hot spot temperature of a particular thermal zone is part
of driver data. Pass them here instead and obtain the values
while of node parsing.
Signed-off-by: NKeerthy <j-keerthy@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arch/arm/boot/dts/omap443x.dtsi

@@ -71,4 +71,8 @@
 
 };
 
+&cpu_thermal {
+	coefficients = <0 20000>;
+};
+
 /include/ "omap443x-clocks.dtsi"