sunxi: a53: add support for Olimex A64-Olinuxino

Specifications:

 SoC: Allwinner A64 (1.2 GHz Quad-Core ARM Cortex-A53 64-bit)
 RAM: 1GB or 2GB RAM DDR3L @ 672Mhz
 Flash: 0/4/16GB eMMC flash memory for storage and boot
 MicroSD card connector for cards up to 32GB
 Debug: serial UART debug header with 0.1" pins
 Wired connectivity: 10/100/1000Mbps GbE Ethernet
 Wireless connectivity: on-board RTL8723BS 1T1R 802.11bgn WiFi and
                        Bluetooth 4.0 module with built-in antenna
                        (only available in the A64-OLinuXino-1G4GW)

Flashing instructions:

 Standard sunxi SD card installation procedure - copy image to SD card,
 insert in into SD card slot on the device and boot.

Known issues:

 Wireless doesn't work properly via netifd.

Signed-off-by: Petr Štetiar <ynezz@true.cz>

target/linux/sunxi/image/cortex-a53.mk

@@ -38,6 +38,15 @@ define Device/friendlyarm_nanopi-neo2
 endef
 TARGET_DEVICES += friendlyarm_nanopi-neo2
 
+define Device/olimex_a64-olinuxino
+  DEVICE_VENDOR := Olimex
+  DEVICE_MODEL := A64-Olinuxino
+  DEVICE_PACKAGES := kmod-rtl8723bs rtl8723bs-firmware
+  $(Device/sun50i-a64)
+  SUNXI_DTS := $$(SUNXI_DTS_DIR)$$(SOC)-olinuxino
+endef
+TARGET_DEVICES += olimex_a64-olinuxino
+
 define Device/pine64_pine64-plus
   DEVICE_VENDOR := Pine64
   DEVICE_MODEL := Pine64+