nitrogen6sx: prefer hannstar7 over lg1280x800
nitrogen6sx: add IMX_VD38_AUO_B101EW05
nitrogen6sx: add IMX_VD38_DT070BTFT
nitrogen6sx: add CONFIG_CMD_GPIO
nitrogen6sx: explicit fbp_detect_i2c
nitrogen6sx: use _detect directly
nitrogen6sx: LCD should not use FBF_MODESTR
nitrogen6sx: use boundary.h
nitrogen6sx: print ethernet phy name
nitrogen6sx: setup rgb_gpio_pads in board_early_init_f
nitrogen6sx: make more like Linux dts file
nitrogen6sx: add CONFIG_SPI_FLASH_SPANSION
nitrogen6sx: add select MX6SX to Kconfig so that ROM_UNIFIED_SECTIONS is properly selected
nitrogen6sx: set usb_ether mac properly
nitrogen6sx: nitrogen6sx_defconfig add CONFIG_BLOCK_CACHE
nitrogen6sx: turn off power to Silex test module
nitrogen6sx: use common code for eth init
nitrogen6sx: eth.c now in common directory
nitrogen6sx: move misc_init_r/do_kbd to common
nitrogen6sx: move mmc_init/ dram_init/ overwrite_console/ common_board_init/ splash_screen_prepare/ board_cfb_skip to common
nitrogen6sx: normal display support
nitrogen6sx: add  CONFIG_SPI_FLASH_GIGADEVICE: to defconfigs
nitrogen6sx: add comment for ddr
nitrogen6sx: port to v2018.07

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

nitrogen6sx: add convenient helper M4 commands
In order to flash and load the M4 firmware.
nitrogen6sx: don't set FBF_MODESTR for hdmi resolutions
nitrogen6sx: add CONFIG_SYS_FSL_ESDH_GPIO_WP
nitrogen6sx: fix SPI5 slave select pin muxing
Tested with spi_master MQX sample app for the Cortex-M4 of the SoloX.
nitrogen6sx.h: add basic fastboot support
Only works on eMMC with GPT already present.
nitrogen6sx: update m4 support for FreeRTOS
nitrogen6sx: add secure boot option
nitrogen6sx: fix missing clock enable for FEC1
nitrogen6sx: update to v2017.01
nitrogen6sx: update to v2017.03
nitrogen6sx.h: fix m4loadaddr value

nitrogen6sx: fix m4 variables to match new naming convention

Previous variables were relying on 'bootdevs' which doesn't exist any
longer. Also sort the variables alphabetically.

Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>