Add missing pkgconfig dependencies

A number of skeleton recipes were missing pkgconfig dependencies.
Exposed by Yocto 2.3 per-recipe sysroots feature.

Change-Id: I514a95d08e199b395355341fec586b2af11428b5
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/common/recipes-phosphor/fans/obmc-control-fan.bb b/common/recipes-phosphor/fans/obmc-control-fan.bb
index 501f54a..60bc876 100644
--- a/common/recipes-phosphor/fans/obmc-control-fan.bb
+++ b/common/recipes-phosphor/fans/obmc-control-fan.bb
@@ -4,6 +4,7 @@
 
 inherit skeleton-sdbus
 inherit obmc-phosphor-dbus-service
+inherit pkgconfig
 
 RDEPENDS_${PN} += "libsystemd"
 SKELETON_DIR = "fanctl"
diff --git a/common/recipes-phosphor/flash/obmc-flash-bios.bb b/common/recipes-phosphor/flash/obmc-flash-bios.bb
index c425027..f42bef4 100644
--- a/common/recipes-phosphor/flash/obmc-flash-bios.bb
+++ b/common/recipes-phosphor/flash/obmc-flash-bios.bb
@@ -6,6 +6,7 @@
 
 inherit skeleton-gdbus
 inherit obmc-phosphor-dbus-service
+inherit pkgconfig
 
 SKELETON_DIR = "flashbios"
 DBUS_SERVICE_${PN} += "org.openbmc.control.Flash.service"
diff --git a/common/recipes-phosphor/flash/obmc-op-flasher.bb b/common/recipes-phosphor/flash/obmc-op-flasher.bb
index d3d1290..e70c354 100644
--- a/common/recipes-phosphor/flash/obmc-op-flasher.bb
+++ b/common/recipes-phosphor/flash/obmc-op-flasher.bb
@@ -3,6 +3,7 @@
 PR = "r1"
 
 inherit skeleton-gdbus
+inherit pkgconfig
 
 DEPENDS += "pflash"
 RDEPENDS_${PN} += "pflash"
diff --git a/common/recipes-phosphor/host/obmc-op-control-host.bb b/common/recipes-phosphor/host/obmc-op-control-host.bb
index 1842697..a4dba77 100644
--- a/common/recipes-phosphor/host/obmc-op-control-host.bb
+++ b/common/recipes-phosphor/host/obmc-op-control-host.bb
@@ -4,6 +4,7 @@
 
 inherit skeleton-gdbus
 inherit obmc-phosphor-dbus-service
+inherit pkgconfig
 
 PROVIDES += "virtual/obmc-host-ctl"
 RPROVIDES_${PN} += "virtual-obmc-host-ctl"