pkgconfig: Upgrade to latest git tip

0.28 was released 2 years ago and bunch of patches
have gone in since. The commit rate is quite low
so its not a lot of churn to use. We have backports
for few bugs that are removed. Git version of recipe is removed too
since its no longer needed

Change-Id: I4b57db15320c76b1de5d26a733e60436663ff34a
(From OE-Core rev: c7478e328f6507350b7d2d2c790b3dd2bfe2d832)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/pkgconfig/pkgconfig.inc

@@ -12,9 +12,11 @@ DEPENDS = "glib-2.0"
 DEPENDS_class-native = ""
 DEPENDS_class-nativesdk = ""
 
-SRC_URI = "http://pkgconfig.freedesktop.org/releases/pkg-config-${PV}.tar.gz"
+SRCREV = "40342dd0ead05d457a2a4e692cf865f50033a709"
+PV = "0.28+git${SRCPV}"
+SRC_URI = "git://anongit.freedesktop.org/pkg-config"
 
-S = "${WORKDIR}/pkg-config-${PV}/"
+S = "${WORKDIR}/git"
 
 inherit autotools