Translate the ERESTARTSYS error code into ERESTART in the LinuxKPI
ioctl(), read() and write() system call handlers. This error code is
internal to the kernel and should not be seen by user-space programs
according to Linux.

Submitted by: Yanko Yankulov <yanko.yankulov@gmail.com>
MFC after: 1 week
Sponsored by: Mellanox Technologies