s: initial addition, Boundary Devices board

s.h: CONFIG_IPUV3_CLK 264000000
s: add poweroff to board, and many other changes
s: don't include 115200 in console environment variable
s: add CONFIG_CMD_GPIO
s: explicit fbp_detect_i2c
s: verify fuse blown before setting wlmac
s: verify port in board_ehci_hcd_init
s: use boundary.h
s: add CONFIG_SPI_FLASH_SPANSION
s: s_defconfig add CONFIG_BLOCK_CACHE
s: use common code for eth init
s: eth.c now in common directory
s: move misc_init_r/do_kbd to common
s: move mmc_init/ dram_init/ overwrite_console/ common_board_init/ splash_screen_prepare/ board_cfb_skip to common
s: add  CONFIG_SPI_FLASH_GIGADEVICE: to defconfigs
s: add s_q2g.cfg
s: port to v2018.07

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

s: update to v2017.01
s: update to v2017.03

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