riscv: dts: spacemit: Add DMA translation buses for K1

The SpacemiT K1 has various static translations of DMA accesses. Add
these as simple-bus nodes with dma-ranges. Devices actually using these
translations will be added to or moved inside the bus nodes in later
patches.

The bus names are assigned according to consensus with SpacemiT [1].

Link: https://lore.kernel.org/r/CAH1PCMaC+imcMZCFYtRdmH6ge=dPgnANn_GqVfsGRS=+YhyJCw@mail.gmail.com [1]
Signed-off-by: Vivian Wang <wangruikang@iscas.ac.cn>
Reviewed-by: Guodong Xu <guodong@riscstar.com>
Link: https://lore.kernel.org/r/20250623-k1-dma-buses-rfc-wip-v1-1-c0144082061f@iscas.ac.cn
Signed-off-by: Yixun Lan <dlan@gentoo.org>

Author: dramforever

arch/riscv/boot/dts/spacemit/k1.dtsi

@@ -769,5 +769,58 @@
 			reg-io-width = <4>;
 			status = "reserved"; /* for TEE usage */
 		};
+
+		camera-bus {
+			compatible = "simple-bus";
+			ranges;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			dma-ranges = <0x0 0x00000000 0x0 0x00000000 0x0 0x80000000>,
+				     <0x0 0x80000000 0x1 0x00000000 0x1 0x80000000>;
+		};
+
+		dma-bus {
+			compatible = "simple-bus";
+			ranges;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			dma-ranges = <0x0 0x00000000 0x0 0x00000000 0x0 0x80000000>,
+				     <0x1 0x00000000 0x1 0x80000000 0x3 0x00000000>;
+		};
+
+		multimedia-bus {
+			compatible = "simple-bus";
+			ranges;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			dma-ranges = <0x0 0x00000000 0x0 0x00000000 0x0 0x80000000>,
+				     <0x0 0x80000000 0x1 0x00000000 0x3 0x80000000>;
+		};
+
+		network-bus {
+			compatible = "simple-bus";
+			ranges;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			dma-ranges = <0x0 0x00000000 0x0 0x00000000 0x0 0x80000000>,
+				     <0x0 0x80000000 0x1 0x00000000 0x0 0x80000000>;
+		};
+
+		pcie-bus {
+			compatible = "simple-bus";
+			ranges;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			dma-ranges = <0x0 0x00000000 0x0 0x00000000 0x0 0x80000000>,
+				     <0x0 0xb8000000 0x1 0x38000000 0x3 0x48000000>;
+		};
+
+		storage-bus {
+			compatible = "simple-bus";
+			ranges;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			dma-ranges = <0x0 0x00000000 0x0 0x00000000 0x0 0x80000000>;
+		};
 	};
 };