sunxi: Display: Add support for eDP panels connected via an anx9804 bridge

Add support for 4 1.62G lane eDP panels connected via an anx9804 bridge,
such as found on the Colombus devkit.

While at it also fix the wrong indentation of the SSD2828 Kconfig help text
in board/sunxi/Kconfig.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/configs/Colombus_defconfig b/configs/Colombus_defconfig
index 7fa9ef1..35f644a 100644
--- a/configs/Colombus_defconfig
+++ b/configs/Colombus_defconfig
@@ -4,6 +4,16 @@
 CONFIG_DRAM_CLK=240
 CONFIG_DRAM_ZQ=251
 CONFIG_USB1_VBUS_PIN=""
+CONFIG_I2C0_ENABLE=y
+CONFIG_AXP_GPIO=y
+CONFIG_VIDEO_LCD_MODE="x:2048,y:1536,depth:24,pclk_khz:208000,le:5,ri:150,up:9,lo:24,hs:5,vs:1,sync:3,vmode:0"
+CONFIG_VIDEO_LCD_DCLK_PHASE=0
+CONFIG_VIDEO_LCD_POWER="PH27"
+CONFIG_VIDEO_LCD_BL_EN="PM1"
+CONFIG_VIDEO_LCD_BL_PWM="PH13"
+CONFIG_VIDEO_LCD_PANEL_I2C_SDA="PA23"
+CONFIG_VIDEO_LCD_PANEL_I2C_SCL="PA24"
+CONFIG_VIDEO_LCD_PANEL_EDP_4_LANE_1620M_VIA_ANX9804=y
 CONFIG_DEFAULT_DEVICE_TREE="sun6i-a31-colombus"
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
 CONFIG_SPL=y
@@ -13,4 +23,5 @@
 # CONFIG_CMD_FPGA is not set
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_AXP221_ALDO1_VOLT=3300
+CONFIG_AXP221_ELDO3_VOLT=1800
 CONFIG_USB_EHCI_HCD=y