ARM64: dts: amlogic: use generic bus node names

The DT spec recommends that node-names have generic names like "bus".
Fix that in the Amlogic DTs, while leaving the label names to have more
SoC-specific names that match with the HW documentation.
Suggested-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

arch/arm64/boot/dts/amlogic/meson-axg.dtsi

@@ -113,7 +113,7 @@ soc {
 		#size-cells = <2>;
 		ranges;
 
-		cbus: cbus@ffd00000 {
+		cbus: bus@ffd00000 {
 			compatible = "simple-bus";
 			reg = <0x0 0xffd00000 0x0 0x25000>;
 			#address-cells = <2>;
@@ -175,7 +175,7 @@ cpu_scp_hpri: scp-shmem@200 {
 			};
 		};
 
-		aobus: aobus@ff800000 {
+		aobus: bus@ff800000 {
 			compatible = "simple-bus";
 			reg = <0x0 0xff800000 0x0 0x100000>;
 			#address-cells = <2>;

arch/arm64/boot/dts/amlogic/meson-gx.dtsi

@@ -211,7 +211,7 @@ soc {
 		#size-cells = <2>;
 		ranges;
 
-		cbus: cbus@c1100000 {
+		cbus: bus@c1100000 {
 			compatible = "simple-bus";
 			reg = <0x0 0xc1100000 0x0 0x100000>;
 			#address-cells = <2>;
@@ -366,7 +366,7 @@ cpu_scp_hpri: scp-shmem@200 {
 			};
 		};
 
-		aobus: aobus@c8100000 {
+		aobus: bus@c8100000 {
 			compatible = "simple-bus";
 			reg = <0x0 0xc8100000 0x0 0x100000>;
 			#address-cells = <2>;
@@ -453,7 +453,7 @@ hwrng: rng {
 			};
 		};
 
-		hiubus: hiubus@c883c000 {
+		hiubus: bus@c883c000 {
 			compatible = "simple-bus";
 			reg = <0x0 0xc883c000 0x0 0x2000>;
 			#address-cells = <2>;