h4: initial addition, Boundary Devices board

h4: fix on/off levels
h4.h: CONFIG_IPUV3_CLK 264000000
h4: add CONFIG_CMD_GPIO
h4: explicit fbp_detect_i2c
h4: use boundary.h
h4: setup rgb_gpio_pads in board_early_init_f
h4: add CONFIG_SPI_FLASH_SPANSION
h4: h4_defconfig add CONFIG_BLOCK_CACHE
h4: use common code for eth init
h4: eth.c now in common directory
h4: move misc_init_r/do_kbd to common
h4: move max77823_init to common
h4: move mmc_init/ dram_init/ overwrite_console/ common_board_init/ splash_screen_prepare/ board_cfb_skip to common
h4: use common 1066mhz_4x256mx16.cfg
h4: KEY_COL0 must be UART4_TX_DATA
h4: add  CONFIG_SPI_FLASH_GIGADEVICE: to defconfigs
h4: use common ddr script
h4: port to v2018.07

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

h4: update to v2017.01
h4: update to v2017.03

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