riscv: sophgo: dts: add cooling maps for Milk-V Pioneer

The normal operating temperature range of SG2042 is -20 degrees
Celsius ~ 85 degrees Celsius.

Simultaneously monitor soc temperature and board temperature to
improve redundancy and safety.

Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
Link: https://lore.kernel.org/r/5a36a2784d97ed7b1e06777cb0c3c14fe9185e99.1739351437.git.unicorn_wang@outlook.com
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>

arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts

@@ -111,6 +111,28 @@
 					type = "hot";
 				};
 			};
+
+			cooling-maps {
+				map0 {
+					trip = <&soc_active1>;
+					cooling-device = <&pwmfan 0 1>;
+				};
+
+				map1 {
+					trip = <&soc_active2>;
+					cooling-device = <&pwmfan 1 2>;
+				};
+
+				map2 {
+					trip = <&soc_active3>;
+					cooling-device = <&pwmfan 2 3>;
+				};
+
+				map3 {
+					trip = <&soc_hot>;
+					cooling-device = <&pwmfan 3 4>;
+				};
+			};
 		};
 
 		board-thermal {
@@ -125,6 +147,13 @@
 					type = "active";
 				};
 			};
+
+			cooling-maps {
+				map4 {
+					trip = <&board_active>;
+					cooling-device = <&pwmfan 3 4>;
+				};
+			};
 		};
 	};
 };