ARC: [eznps] make BB ftpd behave like proftpd

Just like proftpd we used to work with
1) Ask for password during login
2) print same OK log

This is in order to not break our expect scripts and IDE plugin.
Signed-off-by: Noam Camus <noamc@ezchip.com>
ARC: [eznps] change busybox defconfig

This one includes telnetd/ftpd

Signed-off-by: Noam Camus <noamc@ezchip.com>
ARC: [eznps] set PS1 to be EZdk

Signed-off-by: Noam Camus <noamc@ezchip.com>
ARC: [eznps] update SYSV users

Users root and default got password identical to their username
Also no getty at serial just need to press any key.

Signed-off-by: Noam Camus <noamc@ezchip.com>
ARC: [eznps] add BR2 defconfig

This is minimal configuration for EZdk

Signed-off-by: Noam Camus <noamc@ezchip.com>