Fixed "dev" command to only parse one word
Fixed "dev" command to only parse one word

The "dev" command parsed the whole remaining input line. That way it was not
possible to do something like "dev / ls" at the prompt. Now it parses only
the next available word in the input so that the rest of the input line can
be interpreted by the Forth engine instead.

Signed-off-by: Thomas Huth <9e65be74847981e55b2564b6266c57d86d3bac05@linux.vnet.ibm.com>

qemu/SLOF,dgibson/SLOF,leilihh/SLOF,leilihh/SLOF,agraf/SLOF,open-power-host-os/slof,dgibson/SLOF,agraf/SLOF,stefanberger/SLOF-tpm,mdroth/SLOF,mdroth/SLOF,stefanberger/SLOF-tpm,aik/SLOF,k0da/SLOF,stefanberger/SLOF-tpm,open-power-host-os/slof,agraf/SLOF,aik/SLOF,aik/SLOF,k0da/SLOF,k0da/SLOF,mdroth/SLOF,dgibson/SLOF,open-power-host-os/slof,agraf/SLOF,leilihh/SLOF,leilihh/SLOF,k0da/SLOF,open-power-host-os/slof,mdroth/SLOF,qemu/SLOF,dgibson/SLOF,qemu/SLOF