ARM: dts: rk3288: Remove unused LCDC clock assigned

The LCDC assigned rate is 0, it will make boot error,
error log:"pll_para_config: the frequency can not be
 0 Hz". Remove them, and the lcdc driver will do the
correct clock rate setting.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

arch/arm/dts/rk3288.dtsi

@@ -604,19 +604,16 @@
 		u-boot,dm-pre-reloc;
 		#clock-cells = <1>;
 		#reset-cells = <1>;
-		assigned-clocks = <&cru DCLK_VOP0>, <&cru DCLK_VOP1>,
-				  <&cru PLL_GPLL>, <&cru PLL_CPLL>,
+		assigned-clocks = <&cru PLL_GPLL>, <&cru PLL_CPLL>,
 				  <&cru PLL_NPLL>, <&cru ACLK_CPU>,
 				  <&cru HCLK_CPU>, <&cru PCLK_CPU>,
 				  <&cru ACLK_PERI>, <&cru HCLK_PERI>,
 				  <&cru PCLK_PERI>;
-		assigned-clock-rates = <0>, <0>,
-				       <594000000>, <400000000>,
+		assigned-clock-rates = <594000000>, <400000000>,
 				       <500000000>, <300000000>,
 				       <150000000>, <75000000>,
 				       <300000000>, <150000000>,
 				       <75000000>;
-		assigned-clock-parents = <&cru PLL_NPLL>, <&cru PLL_GPLL>;
 	};
 
 	grf: syscon@ff770000 {