vp: initial addition, Boundary Devices board

vp.h: CONFIG_IPUV3_CLK 264000000
vp: fix MAINTAINERS file
vp: use nitrogen6x clocks.cfg/ddr-setup.cfg
vp: add CONFIG_CMD_GPIO
vp: explicit fbp_detect_i2c
vp: verify port in board_ehci_hcd_init
vp: use boundary.h
vp: setup rgb_gpio_pads in board_early_init_f
vp: add CONFIG_SPI_FLASH_SPANSION
vp: vp_defconfig add CONFIG_BLOCK_CACHE
vp: use common code for eth init
vp: eth.c now in common directory
vp: move misc_init_r/do_kbd to common
vp: move max77823_init to common
vp: move mmc_init/ dram_init/ overwrite_console/ common_board_init/ splash_screen_prepare/ board_cfb_skip to common
vp: use common 1066mhz_4x256mx16.cfg
vp: add  CONFIG_SPI_FLASH_GIGADEVICE: to defconfigs
vp: use common ddr script
vp: port to v2018.07

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

vp: update to v2017.01
vp: update to v2017.03

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