ARM: dts: nxp: imx6qdl: fix esai clock warning when do dtb_check

Remove unused clock-names 'mem'.  Driver (sound/soc/fsl/fsl_esai.c.) never
use clock name 'mem'.

arch/arm/boot/dts/nxp/imx/imx6q-sabreauto.dtb: esai@2024000: clocks: [[2, 208], [2, 209], [2, 118], [2, 208], [2, 156]] is too long
	from schema $id: http://devicetree.org/schemas/sound/fsl,esai.yaml#
arch/arm/boot/dts/nxp/imx/imx6q-sabreauto.dtb: esai@2024000: clock-names:1: 'extal' was expected
	from schema $id: http://devicetree.org/schemas/sound/fsl,esai.yaml#
arch/arm/boot/dts/nxp/imx/imx6q-sabreauto.dtb: esai@2024000: clock-names:2: 'fsys' was expected
	from schema $id: http://devicetree.org/schemas/sound/fsl,esai.yaml#
arch/arm/boot/dts/nxp/imx/imx6q-sabreauto.dtb: esai@2024000: clock-names:3: 'spba' was expected
	from schema $id: http://devicetree.org/schemas/sound/fsl,esai.yaml#
arch/arm/boot/dts/nxp/imx/imx6q-sabreauto.dtb: esai@2024000: clock-names: ['core', 'mem', 'extal', 'fsys', 'spba'] is too long
	from schema $id: http://devicetree.org/schemas/sound/fsl,esai.yaml#Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/nxp/imx/imx6qdl.dtsi

@@ -397,11 +397,10 @@ esai: esai@2024000 {
 					reg = <0x02024000 0x4000>;
 					interrupts = <0 51 IRQ_TYPE_LEVEL_HIGH>;
 					clocks = <&clks IMX6QDL_CLK_ESAI_IPG>,
-						 <&clks IMX6QDL_CLK_ESAI_MEM>,
 						 <&clks IMX6QDL_CLK_ESAI_EXTAL>,
 						 <&clks IMX6QDL_CLK_ESAI_IPG>,
 						 <&clks IMX6QDL_CLK_SPBA>;
-					clock-names = "core", "mem", "extal", "fsys", "spba";
+					clock-names = "core", "extal", "fsys", "spba";
 					dmas = <&sdma 23 21 0>, <&sdma 24 21 0>;
 					dma-names = "rx", "tx";
 					status = "disabled";