arm64: dts: mt8173: Add clocks for SCPSYS unit

Add clocks needed by Mediatek VENC and VENC_LT power domianis.
These clocks were needed by accessing subsystem's registers,
so they need to be enabled before power on these subsystems.
Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

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

@@ -234,8 +234,10 @@ scpsys: scpsys@10006000 {
 			#power-domain-cells = <1>;
 			reg = <0 0x10006000 0 0x1000>;
 			clocks = <&clk26m>,
-				 <&topckgen CLK_TOP_MM_SEL>;
-			clock-names = "mfg", "mm";
+				 <&topckgen CLK_TOP_MM_SEL>,
+				 <&topckgen CLK_TOP_VENC_SEL>,
+				 <&topckgen CLK_TOP_VENC_LT_SEL>;
+			clock-names = "mfg", "mm", "venc", "venc_lt";
 			infracfg = <&infracfg>;
 		};