Add required package "pkgconfig"

This package is required for the following receipes
in yocto-2.3.
Otherwise we get the error:
"fatal error: gio/gio.h: No such file or directory"

Change-Id: I020c8f31d707da716956b7856ba14076294bd7c7
Signed-off-by: Saqib Khan <khansa@us.ibm.com>
diff --git a/common/recipes-phosphor/chassis/obmc-button-power.bb b/common/recipes-phosphor/chassis/obmc-button-power.bb
index db995e1..144d4e1 100644
--- a/common/recipes-phosphor/chassis/obmc-button-power.bb
+++ b/common/recipes-phosphor/chassis/obmc-button-power.bb
@@ -4,6 +4,7 @@
 
 inherit skeleton-gdbus
 inherit obmc-phosphor-dbus-service
+inherit pkgconfig
 
 SKELETON_DIR = "pwrbutton"
 
diff --git a/common/recipes-phosphor/chassis/obmc-button-reset.bb b/common/recipes-phosphor/chassis/obmc-button-reset.bb
index 802e499..9435d31 100644
--- a/common/recipes-phosphor/chassis/obmc-button-reset.bb
+++ b/common/recipes-phosphor/chassis/obmc-button-reset.bb
@@ -4,6 +4,7 @@
 
 inherit skeleton-gdbus
 inherit obmc-phosphor-dbus-service
+inherit pkgconfig
 
 SKELETON_DIR = "rstbutton"
 
diff --git a/common/recipes-phosphor/chassis/obmc-op-control-power.bb b/common/recipes-phosphor/chassis/obmc-op-control-power.bb
index 4388e7a..5dd6d12 100644
--- a/common/recipes-phosphor/chassis/obmc-op-control-power.bb
+++ b/common/recipes-phosphor/chassis/obmc-op-control-power.bb
@@ -4,6 +4,7 @@
 
 inherit skeleton-gdbus
 inherit obmc-phosphor-dbus-service
+inherit pkgconfig
 
 DEPENDS += "phosphor-mapper systemd"
 
diff --git a/common/recipes-phosphor/chassis/obmc-pcie-detect.bb b/common/recipes-phosphor/chassis/obmc-pcie-detect.bb
index b070958..6b5761b 100644
--- a/common/recipes-phosphor/chassis/obmc-pcie-detect.bb
+++ b/common/recipes-phosphor/chassis/obmc-pcie-detect.bb
@@ -4,6 +4,7 @@
 
 inherit skeleton-gdbus
 inherit obmc-phosphor-systemd
+inherit pkgconfig
 
 SKELETON_DIR = "pciedetect"
 
diff --git a/common/recipes-phosphor/skeleton/obmc-libobmc-intf.bb b/common/recipes-phosphor/skeleton/obmc-libobmc-intf.bb
index 39043c0..09027dd 100644
--- a/common/recipes-phosphor/skeleton/obmc-libobmc-intf.bb
+++ b/common/recipes-phosphor/skeleton/obmc-libobmc-intf.bb
@@ -4,6 +4,7 @@
 PR = "r1"
 
 inherit skeleton
+inherit pkgconfig
 
 DEPENDS += "glib-2.0"
 
diff --git a/common/recipes-phosphor/system/obmc-control-bmc.bb b/common/recipes-phosphor/system/obmc-control-bmc.bb
index 99f5618..eb5b4a8 100644
--- a/common/recipes-phosphor/system/obmc-control-bmc.bb
+++ b/common/recipes-phosphor/system/obmc-control-bmc.bb
@@ -5,6 +5,7 @@
 
 inherit skeleton-gdbus
 inherit obmc-phosphor-dbus-service
+inherit pkgconfig
 
 SKELETON_DIR = "bmcctl"