riscv: dts: spacemit: Move eMMC under storage-bus for K1

SDHCI devices in Spacemit K1 use storage-bus translations. Move the node
emmc under storage-bus to reflect this fact.

Signed-off-by: Vivian Wang <wangruikang@iscas.ac.cn>
Link: https://lore.kernel.org/r/20250623-k1-dma-buses-rfc-wip-v1-3-c0144082061f@iscas.ac.cn
Signed-off-by: Yixun Lan <dlan@gentoo.org>

Author: dramforever

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

@@ -595,15 +595,6 @@
 			#clock-cells = <1>;
 		};
 
-		emmc: mmc@d4281000 {
-			compatible = "spacemit,k1-sdhci";
-			reg = <0x0 0xd4281000 0x0 0x200>;
-			clocks = <&syscon_apmu CLK_SDH_AXI>, <&syscon_apmu CLK_SDH2>;
-			clock-names = "core", "io";
-			interrupts = <101>;
-			status = "disabled";
-		};
-
 		syscon_apmu: system-controller@d4282800 {
 			compatible = "spacemit,k1-syscon-apmu";
 			reg = <0x0 0xd4282800 0x0 0x400>;
@@ -831,6 +822,16 @@
 			#address-cells = <2>;
 			#size-cells = <2>;
 			dma-ranges = <0x0 0x00000000 0x0 0x00000000 0x0 0x80000000>;
+
+			emmc: mmc@d4281000 {
+				compatible = "spacemit,k1-sdhci";
+				reg = <0x0 0xd4281000 0x0 0x200>;
+				clocks = <&syscon_apmu CLK_SDH_AXI>,
+					 <&syscon_apmu CLK_SDH2>;
+				clock-names = "core", "io";
+				interrupts = <101>;
+				status = "disabled";
+			};
 		};
 	};
 };