In order to better support multilib processing, switch from PN
to BPN.
(From OE-Core rev: 75f70ab534f6dfef961906fb5c252f9e5310d38f)
Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>