arm64: dts: mediatek: mt8186: fix VENC power domain clocks

The larb clock is in fact a subsys clock, so it must be prefixed by
'subsys-' to be correctly identified in the driver.

Fixes: d9e43c1e ("arm64: dts: mt8186: Add power domains controller")
Signed-off-by: Eugen Hristev <eugen.hristev@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20231228113245.174706-6-eugen.hristev@collabora.comSigned-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

arch/arm64/boot/dts/mediatek/mt8186.dtsi

@@ -1061,7 +1061,7 @@ power-domain@MT8186_POWER_DOMAIN_VENC {
 						reg = <MT8186_POWER_DOMAIN_VENC>;
 						clocks = <&topckgen CLK_TOP_VENC>,
 							 <&vencsys CLK_VENC_CKE1_VENC>;
-						clock-names = "venc0", "larb";
+						clock-names = "venc0", "subsys-larb";
 						mediatek,infracfg = <&infracfg_ao>;
 						#power-domain-cells = <0>;
 					};