a: add usb hub reset/uart3/uart4/flexcan pins
a: keep USB Huawei Modem in reset
a: add leds rx active/tx active
a: remove printf of board_mmc_init
a.h: add cmd_custom to avoid update u-boot warning
a: add CONFIG_CMD_GPIO
a: remove redundant CONFIG_CMD_GPIO
a: verify port in board_ehci_hcd_init
a: use boundary.h
a: call preboot_keys
a: add CONFIG_SPI_FLASH_SPANSION
a: add RV4162 rtc on I2C2
a: a_defconfig add CONFIG_BLOCK_CACHE
a: use common code for eth init
a: eth.c now in common directory
a: move misc_init_r/do_kbd to common
a: move mmc_init/ dram_init/ overwrite_console/ common_board_init/ splash_screen_prepare/ board_cfb_skip to common
a: add  CONFIG_SPI_FLASH_GIGADEVICE: to defconfigs
a: add a_s512m.cfg
a: port to v2018.07

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

a: update to v2017.01
a: update to v2017.03
a.h: add custom BOOT_TARGET_DEVICES priority

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