arm64: dts: mediatek: mt8173: Fix disp-pwm compatible string

commit 46ad360 upstream.

The MT8173 disp-pwm device should have only one compatible string, based
on the following DT validation error:

    arch/arm64/boot/dts/mediatek/mt8173-elm.dtb: pwm@1401e000: compatible: 'oneOf' conditional failed, one must be fixed:
	    ['mediatek,mt8173-disp-pwm', 'mediatek,mt6595-disp-pwm'] is too long
	    'mediatek,mt8173-disp-pwm' is not one of ['mediatek,mt6795-disp-pwm', 'mediatek,mt8167-disp-pwm']
	    'mediatek,mt8173-disp-pwm' is not one of ['mediatek,mt8186-disp-pwm', 'mediatek,mt8188-disp-pwm', 'mediatek,mt8192-disp-pwm', 'mediatek,mt8195-disp-pwm', 'mediatek,mt8365-disp-pwm']
	    'mediatek,mt8173-disp-pwm' was expected
	    'mediatek,mt8183-disp-pwm' was expected
	    from schema $id: http://devicetree.org/schemas/pwm/mediatek,pwm-disp.yaml#
    arch/arm64/boot/dts/mediatek/mt8173-elm.dtb: pwm@1401f000: compatible: 'oneOf' conditional failed, one must be fixed:
	    ['mediatek,mt8173-disp-pwm', 'mediatek,mt6595-disp-pwm'] is too long
	    'mediatek,mt8173-disp-pwm' is not one of ['mediatek,mt6795-disp-pwm', 'mediatek,mt8167-disp-pwm']
	    'mediatek,mt8173-disp-pwm' is not one of ['mediatek,mt8186-disp-pwm', 'mediatek,mt8188-disp-pwm', 'mediatek,mt8192-disp-pwm', 'mediatek,mt8195-disp-pwm', 'mediatek,mt8365-disp-pwm']
	    'mediatek,mt8173-disp-pwm' was expected
	    'mediatek,mt8183-disp-pwm' was expected
	    from schema $id: http://devicetree.org/schemas/pwm/mediatek,pwm-disp.yaml#

Drop the extra "mediatek,mt6595-disp-pwm" compatible string.

Fixes: 61aee93 ("arm64: dts: mt8173: add MT8173 display PWM driver support node")
Cc: YH Huang <yh.huang@mediatek.com>
Cc: stable@vger.kernel.org # v4.5+
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20250108083424.2732375-2-wenst@chromium.org
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: wens

arch/arm64/boot/dts/mediatek/mt8173.dtsi

@@ -1255,8 +1255,7 @@
 		};
 
 		pwm0: pwm@1401e000 {
-			compatible = "mediatek,mt8173-disp-pwm",
-				     "mediatek,mt6595-disp-pwm";
+			compatible = "mediatek,mt8173-disp-pwm";
 			reg = <0 0x1401e000 0 0x1000>;
 			#pwm-cells = <2>;
 			clocks = <&mmsys CLK_MM_DISP_PWM026M>,
@@ -1266,8 +1265,7 @@
 		};
 
 		pwm1: pwm@1401f000 {
-			compatible = "mediatek,mt8173-disp-pwm",
-				     "mediatek,mt6595-disp-pwm";
+			compatible = "mediatek,mt8173-disp-pwm";
 			reg = <0 0x1401f000 0 0x1000>;
 			#pwm-cells = <2>;
 			clocks = <&mmsys CLK_MM_DISP_PWM126M>,