portmap: /etc/init.d/portmap restart complains "command not found"

portmap: /etc/init.d/portmap restart complains "command not found"

portmap splits pmap_dump and pmap_set into a different package:
portmap_utils. Since this package might not be installed, I introduce
another init file that tests for the existance of these apps before trying
to run the pmap_* commands.

(From OE-Core rev: cfa813dfc8d8d4d45d9f995d20322a3226a4e20b)

Signed-off-by: Amy Fong <amy.fong@windriver.com>
Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>