rockchip: dts: rk3229: remove dram channel info

The dram channel info will be auto detect by the driver,
we do not need it.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>

arch/arm/dts/rk3229-evb.dts

@@ -40,7 +40,6 @@
 };
 
 &dmc {
-	rockchip,sdram-channel = /bits/ 8 <1 10 3 2 1 0 15 15>;
 	rockchip,pctl-timing = <0x96 0xC8 0x1F3 0xF 0x8000004D 0x4 0x4E 0x6 0x3
 		0x0 0x6 0x5 0xC 0x10 0x6 0x4 0x4
 		0x5 0x4 0x200 0x3 0xA 0x40 0x0 0x1