arm: dts: mediatek: Add missing cooling device properties for CPUs

The cooling device properties, like "#cooling-cells" and
"dynamic-power-coefficient", should either be present for all the CPUs
of a cluster or none. If these are present only for a subset of CPUs of
a cluster then things will start falling apart as soon as the CPUs are
brought online in a different order. For example, this will happen
because the operating system looks for such properties in the CPU node
it is trying to bring up, so that it can register a cooling device.

Add such missing properties.

Signed-off-by: Viresh Kumar <[e-mail]>
Signed-off-by: Matthias Brugger <[e-mail]>

arch/arm/boot/dts/mt7623.dtsi

···
 				 <&apmixedsys CLK_APMIXED_MAINPLL>;
 			clock-names = "cpu", "intermediate";
 			operating-points-v2 = <&cpu_opp_table>;
+			#cooling-cells = <2>;
 			clock-frequency = <1300000000>;
 		};
 
···
 				 <&apmixedsys CLK_APMIXED_MAINPLL>;
 			clock-names = "cpu", "intermediate";
 			operating-points-v2 = <&cpu_opp_table>;
+			#cooling-cells = <2>;
 			clock-frequency = <1300000000>;
 		};
 
···
 				 <&apmixedsys CLK_APMIXED_MAINPLL>;
 			clock-names = "cpu", "intermediate";
 			operating-points-v2 = <&cpu_opp_table>;
+			#cooling-cells = <2>;
 			clock-frequency = <1300000000>;
 		};
 	};