sunxi: Add defconfig and dts file for Polaroid MID2407PXE03 tablet

The Polaroid MID2407PXE03 is an a23 based 7" tablet based on a M86_MB V2.0
PCB, featuring a 800x480 LCD, 512MB RAM, 4G NAND, esp8089 wifi, gsl1680
touchschreen, micro-sd slot, 3.5mm headphone jack and a micro-usb otg
connector which doubles as charging port.

The dts file is identical to the one submitted to the upstream kernel.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/configs/polaroid_mid2407pxe03_defconfig b/configs/polaroid_mid2407pxe03_defconfig
new file mode 100644
index 0000000..9bf6fbf
--- /dev/null
+++ b/configs/polaroid_mid2407pxe03_defconfig
@@ -0,0 +1,24 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_MACH_SUN8I_A23=y
+CONFIG_DRAM_CLK=432
+CONFIG_DRAM_ZQ=63351
+CONFIG_MMC0_CD_PIN="PB4"
+CONFIG_USB0_VBUS_PIN="AXP0-VBUS-ENABLE"
+CONFIG_USB0_VBUS_DET="AXP0-VBUS-DETECT"
+CONFIG_USB0_ID_DET="PH8"
+CONFIG_AXP_GPIO=y
+CONFIG_VIDEO_LCD_MODE="x:800,y:480,depth:18,pclk_khz:33000,le:87,ri:40,up:31,lo:13,hs:1,vs:1,sync:3,vmode:0"
+CONFIG_VIDEO_LCD_DCLK_PHASE=0
+CONFIG_VIDEO_LCD_POWER="PH7"
+CONFIG_VIDEO_LCD_BL_EN="PH6"
+CONFIG_VIDEO_LCD_BL_PWM="PH0"
+CONFIG_DEFAULT_DEVICE_TREE="sun8i-a23-polaroid-mid2407pxe03"
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_SPL=y
+CONFIG_SYS_EXTRA_OPTIONS="CONS_INDEX=5"
+# CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_FLASH is not set
+# CONFIG_CMD_FPGA is not set
+CONFIG_AXP_DLDO1_VOLT=3300
+CONFIG_USB_MUSB_HOST=y