fastd: needs host-bison and host-pkgconf

Fixes (missing host-bison):
http://autobuild.buildroot.net/results/237/2371c98112a416f4d9d32576f207dad8d80ac537

host-pkgconf derived from $(@D)/cmake/deps.cmake

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Reviewed-by: Alexander Dahl <post@lespocky.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/fastd/fastd.mk

@@ -9,7 +9,7 @@ FASTD_SITE = git://git.universe-factory.net/fastd
 FASTD_LICENSE = BSD-2c
 FASTD_LICENSE_FILES = COPYRIGHT
 FASTD_CONF_OPTS = -DENABLE_LIBSODIUM=ON
-FASTD_DEPENDENCIES = libuecc libsodium libcap
+FASTD_DEPENDENCIES = host-bison host-pkgconf libuecc libsodium libcap
 
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 FASTD_CONF_OPTS += -DENABLE_OPENSSL=ON