sunxi: Add support for the CHIP Pro

The CHIP Pro is a SoM that features the GR8 SIP, an AXP209, a BT/WiFi chip
and a 512MiB SLC NAND.

This it's an SLC NAND, it doesn't suffer the same drawbacks than found on
the MLC NANDs, and we can enable it right away.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>

configs/CHIP_pro_defconfig

@@ -0,0 +1,33 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_SPL_I2C_SUPPORT=y
+# CONFIG_SPL_MMC_SUPPORT is not set
+CONFIG_SPL_NAND_SUPPORT=y
+CONFIG_MACH_SUN5I=y
+CONFIG_DRAM_TIMINGS_DDR3_800E_1066G_1333J=y
+CONFIG_USB0_VBUS_PIN="PB10"
+CONFIG_DEFAULT_DEVICE_TREE="sun5i-gr8-chip-pro"
+CONFIG_SYS_EXTRA_OPTIONS="CONS_INDEX=2,SYS_NAND_BLOCK_SIZE=0x40000,SYS_NAND_PAGE_SIZE=4096,SYS_NAND_OOBSIZE=256"
+CONFIG_ENV_IS_IN_UBI=y
+CONFIG_ENV_UBI_PART="UBI"
+CONFIG_ENV_UBI_VOLUME="uboot-env"
+CONFIG_SPL=y
+# CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_LOADB is not set
+# CONFIG_CMD_LOADS is not set
+# CONFIG_CMD_FLASH is not set
+# CONFIG_CMD_FPGA is not set
+CONFIG_CMD_MTDPARTS=y
+CONFIG_MTDIDS_DEFAULT="nand0=sunxi-nand.0"
+CONFIG_MTDPARTS_DEFAULT="mtdparts=sunxi-nand.0:256k(spl),256k(spl-backup),2m(uboot),2m(uboot-backup),-(UBI)"
+# CONFIG_MMC is not set
+CONFIG_NAND_SUNXI=y
+CONFIG_AXP_ALDO3_VOLT=3300
+CONFIG_AXP_ALDO4_VOLT=3300
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_MUSB_GADGET=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_DOWNLOAD=y
+CONFIG_G_DNL_MANUFACTURER="Allwinner Technology"
+CONFIG_G_DNL_VENDOR_NUM=0x1f3a
+CONFIG_G_DNL_PRODUCT_NUM=0x1010