imx: Don't define __ASSEMBLY__ in source files

This is supposed to be a build-system flag. Move it there so we can
define it before linux/kconfig.h is included.

Signed-off-by: Simon Glass <sjg@chromium.org>

Add out4.ru O4-iMX-NANO board

Board designed for quick prototyping and has one microSD port,
2 Ethernet ports, 2 USB ports, I2C, SPI, CAN, RS-485, GPIO,
UART interfaces, and 2 RGB LEDs.

Signed-off-by: Oleh Kravchenko <oleg@kaa.org.ua>
Cc: Stefano Babic <sbabic@denx.de>

Add out4.ru O4-iMX-NANO board

Board designed for quick prototyping and has one microSD port,
2 Ethernet ports, 2 USB ports, I2C, SPI, CAN, RS-485, GPIO,
UART interfaces, and 2 RGB LEDs.

Signed-off-by: Oleh Kravchenko <oleg@kaa.org.ua>
Cc: Stefano Babic <sbabic@denx.de>