pkgconfig: Convert to BBCLASSEXTEND

Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

meta/packages/pkgconfig/pkgconfig-native_0.23.bb

@@ -1,3 +0,0 @@
-require pkgconfig.inc
-inherit native
-DEPENDS = ""

meta/packages/pkgconfig/pkgconfig-nativesdk_0.23.bb

@@ -1,3 +0,0 @@
-require pkgconfig.inc
-inherit nativesdk
-DEPENDS = ""

meta/packages/pkgconfig/pkgconfig.inc

@@ -7,6 +7,13 @@ HOMEPAGE = "http://pkg-config.freedesktop.org/wiki/"
 LICENSE = "GPL"
 PR = "r7"
 
+DEPENDS = "glib-2.0"
+DEPENDS_virtclass-native = ""
+DEPENDS_virtclass-nativesdk = ""
+EXTRA_OECONF = "--with-installed-glib"
+EXTRA_OECONF_virtclass-native = ""
+EXTRA_OECONF_virtclass-nativesdk = ""
+
 SRC_URI = "http://pkgconfig.freedesktop.org/releases/pkg-config-${PV}.tar.gz \
            file://autofoo.patch;patch=1 \
            file://sysrootfix.patch;patch=1 \
@@ -24,3 +31,5 @@ do_configure_prepend () {
 do_stage_prepend() {
 	install -d -m 0755 ${STAGING_LIBDIR}/pkgconfig
 }
+
+BBCLASSEXTEND = "native nativesdk"

meta/packages/pkgconfig/pkgconfig_0.23.bb

@@ -1,4 +1 @@
 require pkgconfig.inc
-
-DEPENDS += "glib-2.0"
-EXTRA_OECONF = "--with-installed-glib"