forked from Imagelibrary/rtems
* psim-top.in, psim-bottom: Added support for options -d (print device tree and exit), -h (usage info) and -n (enable NIC support). * psim-gdb-bottom: Added support for options -s (force sysv IPC), -h (usage info) and -n (enable NIC support). Allow user to override GDB variable from environment. * psim-shared: cat NIC properties into device file if the user had specified '-n'. * runtest-top.in: removed unsupported options -o, -d from usage info.