REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4850
When running 'reset -s' no linefeed is printed. This results in the Linux
command line prompt not being printed at the start of a new line:
Shell> reset -s
Reset with <null string> (0 bytes)user@workstation:/tmp$
Add the missing linefeed.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>