board: sunxi: sun8i-v40: Add Bananapi M2 Berry support

Banana Pi BPI-M2 Berry is a quad-core mini single board computer
built with Allwinner V40 SoC. It features
- Quad Core ARM Cortex A7 CPU V40
- 1GB of RAM .
- microSD/SATA port..
- onboard WiFi and BT
- 4 USB A 2.0 ports
- 1 USB OTG port
- 1 HDMI port
- 1 audio jack
- DC power port

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
diff --git a/configs/bananapi_m2_berry_defconfig b/configs/bananapi_m2_berry_defconfig
new file mode 100644
index 0000000..9d75108
--- /dev/null
+++ b/configs/bananapi_m2_berry_defconfig
@@ -0,0 +1,14 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_SPL=y
+CONFIG_MACH_SUN8I_R40=y
+CONFIG_DRAM_CLK=576
+CONFIG_DRAM_ZQ=3881979
+CONFIG_DRAM_ODT_EN=y
+CONFIG_MMC0_CD_PIN="PH13"
+CONFIG_DEFAULT_DEVICE_TREE="sun8i-v40-bananapi-m2-berry"
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_SPL_I2C_SUPPORT=y
+# CONFIG_CMD_FLASH is not set
+CONFIG_AXP_DLDO4_VOLT=2500
+CONFIG_AXP_ELDO3_VOLT=1200