[patch v4 5/9] rockchip: Pinebook Pro: Enable edp

[Rtp]

- uboot rockchip edp code is looking for a rockchip,panel property
  for the edp dts node, so add it.

Signed-off-by: Arnaud Patard <arnaud.pat...@rtp-net.org>
Tested-by: Peter Robinson <pbrobin...@gmail.com>
Index: u-boot/arch/arm/dts/rk3399-pinebook-pro-u-boot.dtsi
===================================================================
--- u-boot.orig/arch/arm/dts/rk3399-pinebook-pro-u-boot.dtsi
+++ u-boot/arch/arm/dts/rk3399-pinebook-pro-u-boot.dtsi
@@ -16,6 +16,10 @@
        };
 };
 
+&edp {
+       rockchip,panel = <&edp_panel>;
+};
+
 &i2c0 {
        u-boot,dm-pre-reloc;
 };