Replace transitional 'pkg-config' package with 'pkgconf'. Change-Id: I9ee895cb2ca3186c4aefbdab1fd71778bf981009 Signed-off-by: Elyes Haouas <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/82167 Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>