board: sun50i-h5: Add Emlid Neutis N5 support

Emlid Neutis N5 is a SoM based on Allwinner H5, has a WiFi & BT
module, DDR3 RAM and eMMC.

- add neutis-devboard target to dtb makefile
- add dtsi file for Neutis N5 needs
- add config file for Neutis N5 Dev board

Signed-off-by: Aleksandr Aleksandrov <aleksandr.aleksandrov@emlid.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
[jagan: update proper commit head]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/configs/emlid_neutis_n5_devboard_defconfig b/configs/emlid_neutis_n5_devboard_defconfig
new file mode 100644
index 0000000..3df0ca1
--- /dev/null
+++ b/configs/emlid_neutis_n5_devboard_defconfig
@@ -0,0 +1,13 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_SPL=y
+CONFIG_MACH_SUN50I_H5=y
+CONFIG_DRAM_CLK=408
+CONFIG_DRAM_ZQ=3881977
+CONFIG_MMC_SUNXI_SLOT_EXTRA=2
+CONFIG_NR_DRAM_BANKS=1
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+# CONFIG_CMD_FLASH is not set
+# CONFIG_SPL_DOS_PARTITION is not set
+# CONFIG_SPL_EFI_PARTITION is not set
+CONFIG_DEFAULT_DEVICE_TREE="sun50i-h5-emlid-neutis-n5-devboard"