Add the rpmsg tty demo for iMX AMP platforms.
Use the "echo <string> > /dev/*RPMSG*", after insmod the module.
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
[ Aisheng: cope with tty_operations::write() change ]
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
