nitrogen51_vm: add OKAYA_480_272 support
nitrogen51_vm: change I2C2 pullup to 47K
nitrogen51_vm: nitrogen51_vm_256m_defconfig add CONFIG_BLOCK_CACHE
nitrogen51_vm_512m: nitrogen51_vm_512m_defconfig add CONFIG_BLOCK_CACHE
nitrogen51_vm: use internal IPU clock for hvga as default
nitrogen51_vm: use common code for eth init
nitrogen51_vm: eth.c now in common directory
nitrogen51_vm: move misc_init_r/do_kbd to common
nitrogen51_vm: move mmc_init/ dram_init/ overwrite_console/ common_board_init/ splash_screen_prepare/ board_cfb_skip to common
nitrogen51_vm: swap GPIOKEYS/LEDS pins
nitrogen51_vm: add  CONFIG_SPI_FLASH_GIGADEVICE: to defconfigs
nitrogen51_vm: use 32K clock, otherwise clock ticks too fast
nitrogen51_vm: initialize more pins, turn off ov5642
nitrogen51_vm: add comment for ddr
nitrogen51_vm: port to v2018.07

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

nitrogen51_vm: update to v2017.01
nitrogen51_vm: update to v2017.03
nitrogen51_vm: fixes for v2017.07

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