arm64: dts: imx8m: drop "fsl,aips-bus" and "fsl,imx8mq-aips-bus"

There is no binding doc for these compatible string
"fsl,imx8mq-aips-bus" and "fsl,aips-bus", "simple-bus" is enough
for aips usage, so drop the upper two.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mm.dtsi

@@ -232,7 +232,7 @@ soc@0 {
 		ranges = <0x0 0x0 0x0 0x3e000000>;
 
 		aips1: bus@30000000 {
-			compatible = "fsl,aips-bus", "simple-bus";
+			compatible = "simple-bus";
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges = <0x30000000 0x30000000 0x400000>;
@@ -501,7 +501,7 @@ src: reset-controller@30390000 {
 		};
 
 		aips2: bus@30400000 {
-			compatible = "fsl,aips-bus", "simple-bus";
+			compatible = "simple-bus";
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges = <0x30400000 0x30400000 0x400000>;
@@ -560,7 +560,7 @@ system_counter: timer@306a0000 {
 		};
 
 		aips3: bus@30800000 {
-			compatible = "fsl,aips-bus", "simple-bus";
+			compatible = "simple-bus";
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges = <0x30800000 0x30800000 0x400000>;
@@ -775,7 +775,7 @@ fec1: ethernet@30be0000 {
 		};
 
 		aips4: bus@32c00000 {
-			compatible = "fsl,aips-bus", "simple-bus";
+			compatible = "simple-bus";
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges = <0x32c00000 0x32c00000 0x400000>;

arch/arm64/boot/dts/freescale/imx8mn.dtsi

@@ -208,7 +208,7 @@ soc@0 {
 		ranges = <0x0 0x0 0x0 0x3e000000>;
 
 		aips1: bus@30000000 {
-			compatible = "fsl,aips-bus", "simple-bus";
+			compatible = "simple-bus";
 			reg = <0x30000000 0x400000>;
 			#address-cells = <1>;
 			#size-cells = <1>;
@@ -395,7 +395,7 @@ src: reset-controller@30390000 {
 		};
 
 		aips2: bus@30400000 {
-			compatible = "fsl,aips-bus", "simple-bus";
+			compatible = "simple-bus";
 			reg = <0x30400000 0x400000>;
 			#address-cells = <1>;
 			#size-cells = <1>;
@@ -455,7 +455,7 @@ system_counter: timer@306a0000 {
 		};
 
 		aips3: bus@30800000 {
-			compatible = "fsl,aips-bus", "simple-bus";
+			compatible = "simple-bus";
 			reg = <0x30800000 0x400000>;
 			#address-cells = <1>;
 			#size-cells = <1>;
@@ -671,7 +671,7 @@ fec1: ethernet@30be0000 {
 		};
 
 		aips4: bus@32c00000 {
-			compatible = "fsl,aips-bus", "simple-bus";
+			compatible = "simple-bus";
 			reg = <0x32c00000 0x400000>;
 			#address-cells = <1>;
 			#size-cells = <1>;

arch/arm64/boot/dts/freescale/imx8mq.dtsi

@@ -290,7 +290,7 @@ soc@0 {
 		dma-ranges = <0x40000000 0x0 0x40000000 0xc0000000>;
 
 		bus@30000000 { /* AIPS1 */
-			compatible = "fsl,imx8mq-aips-bus", "simple-bus";
+			compatible = "simple-bus";
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges = <0x30000000 0x30000000 0x400000>;
@@ -692,7 +692,7 @@ pgc_pcie2: power-domain@a {
 		};
 
 		bus@30400000 { /* AIPS2 */
-			compatible = "fsl,imx8mq-aips-bus", "simple-bus";
+			compatible = "simple-bus";
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges = <0x30400000 0x30400000 0x400000>;
@@ -751,7 +751,7 @@ system_counter: timer@306a0000 {
 		};
 
 		bus@30800000 { /* AIPS3 */
-			compatible = "fsl,imx8mq-aips-bus", "simple-bus";
+			compatible = "simple-bus";
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges = <0x30800000 0x30800000 0x400000>,
@@ -1023,7 +1023,7 @@ fec1: ethernet@30be0000 {
 		};
 
 		bus@32c00000 { /* AIPS4 */
-			compatible = "fsl,imx8mq-aips-bus", "simple-bus";
+			compatible = "simple-bus";
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges = <0x32c00000 0x32c00000 0x400000>;