As both the DDR SDRAM and NAND flash connect to EBI on at91sam9n12
and share the lower 8 bits data line. If use low drive of the data
line, it will cause DDR data access corrupt in lower address, so
change the data line to high drive mode

This will fix the Linux kernel boot issue when use Lower address

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Andreas Bießmann <andreas.devel@googlemail.com>

add network support with ksz8851_16mll on at91sam9n12ek board

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Andreas Bießmann <andreas.devel@googlemail.com>

Add support for following features:
  - nand boot, with PMECC 2bit ECC for 512 bytes sector
  - SPI flash boot
  - SD card boot
  - LCD support

Signed-off-by: Josh Wu <josh.wu@atmel.com>
[fix -Wimplicit-function-declaration for at91_lcd_hw_init()]
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>