nitrogen6_max: initial addition, Boundary Devices board

nitrogen6qp_max_defconfig: add imx6qp specific ddr calibration
nitrogen6qp_max4g.cfg: add Noc DDR configuration register set
nitrogen6qp_max4g.cfg: change IPU priorities for imx6qp
nitrogen6_max: prefer hannstar7 over lg1280x800
nitrogen6_max: add IMX_VD38_AUO_B101EW05
nitrogen6_max: add IMX_VD38_DT070BTFT
nitrogen6_max: add IMX_VD_LD070WSVGA
nitrogen6_max: add IMX_VD38_TM070JDHG30
nitrogen6_max: add IMX_VD_1080P60_J (jeida 1080p dual lvds)
nitrogen6_max.h: CONFIG_IPUV3_CLK 264000000
nitrogen6_max: use GP_KSZ9021_xx for KSZ9021 strapping
Ready for changing to atheros phy.
nitrogen6_max: use nitrogen6x clocks.cfg/ddr-setup.cfg
nitrogen6qp_max4g.cfg: Noc DDR config done in ddr-setup now
nitrogen6_max4g.cfg: add support for iMX6QP
nitrogen6qp_max4g.cfg: use nitrogen6_max4g.cfg instead
nitrogen6_max: add CONFIG_CMD_GPIO
nitrogen6_max: fix GP_BACKLIGHT_LVDS2
nitrogen6_max.h: make more like nitrogen6x.h
nitrogen6_max: explicit fbp_detect_i2c
nitrogen6_max: add wlmac
nitrogen6_max: verify port in board_ehci_hcd_init
nitrogen6_max: use boundary.h
nitrogen6_max: add nitrogen6_max_4gr0_defconfig for 4G rank0
nitrogen6_max: setup rgb_gpio_pads in board_early_init_f
nitrogen6_max: update comments in 1066mhz_4x512mx16.cfg
nitrogen6_max: add nitrogen6_max_dl2g_defconfig
nitrogen6_max: add nitrogen6_max_dl4g_defconfig
nitrogen6_max: add CONFIG_SPI_FLASH_SPANSION
nitrogen6_max: add VD_TFC_A9700LTWV35TC_C1
nitrogen6_max: add gt911 touch controller if serializer detected
nitrogen6_max: add VD_TFC_A9700LTWV35TC_C1 for LVDS2 as well
nitrogen6_max: add retries for i2c write failures
nitrogen6_max: add ND-070PCAP-1024x600
nitrogen6_max: nitrogen6_max_defconfig add CONFIG_BLOCK_CACHE
nitrogen6_max: use common code for eth init
nitrogen6_max: eth.c now in common directory
nitrogen6_max: move misc_init_r/do_kbd to common
nitrogen6_max: move mmc_init/ dram_init/ overwrite_console/ common_board_init/ splash_screen_prepare/ board_cfb_skip to common
nitrogen6_max: add headphone det, drive mute low
nitrogen6_max: add  CONFIG_SPI_FLASH_GIGADEVICE: to defconfigs
nitrogen6_max: fix DEFCONFIG nitrogen6_max_4gr0
nitrogen6_max: 800mhz_4x256mx16.cfg: use common values

MDCFG0: from 0x686c5343 to 0x666a5333
tRFC - from 105 to 103 clocks
tXS - from 109 to 107 clocks
tFAW - from 21 to 20 clocks

MDCFG1: from 0xb68f8d63 to 0xb68e8b63
tRAS - from 16 to 15 clocks
tWR - from 7 clocks to 6 clocks

MDCFG2: from 0x01ff00dc to 0x01ff00db
tRRD from 5 to 4 clocks

MDRWD: from 0x000026d2 to 0x0f9f26d2
restore unused field to default value

MDOR: from 0x006c1023 to 0x006a1023
tXPR - from 109 to 107 clocks

MR0: from 0x17208030 to 0x15208030
tWR - from 7 to 6 clocks

nitrogen6_max: 800mhz_4x512mx16.cfg: use common values

MDCFG0: from 0x686c5343 to 0x666a5343
tRFC - from 105 to 103 clocks
tXS - from 109 to 107 clocks

MDCFG1: from 0xb68f8d63 to 0xb68e8b63
tRAS - from 16 to 15 clocks
tWR - from 7 clocks to 6 clocks

MDRWD: from 0x000026d2 to 0x0f9f26d2
restore unused field to default value

MDOR: from 0x006c1023 to 0x006a1023
tXPR - from 109 to 107 clocks

MR0: from 0x17208030 to 0x15208030
tWR - from 7 to 6 clocks

nitrogen6_max: use common ddr scripts
nitrogen6_max: port to v2018.07

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

nitrogen6qp_max: add preliminary support
nitrogen6_max.h: add basic fastboot support
Only works on eMMC with GPT already present.
nitrogen6_max: add secure boot option
nitrogen6_max: declare TC358743 interrupt as input
nitrogen6_max: update to v2017.01
nitrogen6_max: update to v2017.03

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