acl: initial addition, Boundary Devices board

acl: update to v2017.01
acl update to v2017.03
acl: fix scanner gpios initialization

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

acl: acl_q2g_defconfig add CONFIG_BLOCK_CACHE
acl_s512m: acl_s512m_defconfig add CONFIG_BLOCK_CACHE
acl: use common code for eth init
acl: eth.c now in common directory
acl: move misc_init_r/do_kbd to common
acl: move mmc_init/ dram_init/ overwrite_console/ common_board_init/ splash_screen_prepare/ board_cfb_skip to common
acl: calibrate 512m Solo board
acl: use common 1066mhz_4x256mx16.cfg
acl: add  CONFIG_SPI_FLASH_GIGADEVICE: to defconfigs
acl: 800mhz_2x128mx16.cfg: remove _P1 accesses
acl: 800mhz_2x128mx16.cfg: use common values

CFG0: 0x40435323 to 0x3f435333
tRFC - 65 to 64 clocks
tFAW - 19 to 20 clocks

CFG1: 0xB66E8D63 to 0xb68e8b63
tRC from 20 to 21 clocks
tWR from 7 to 6 clocks

MR0: 0x13208030 to 0x15208030
tWR from 5 to 6 clocks

acl: use common ddr scripts
acl: port to v2018.07

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