u-boot: Inherit pkgconfig

pkg-config is used by the Makefiles, and thus pkgconfig needs to be
inherited.

(From OE-Core rev: 6148ac9bc5d3e0d0ffdbbd6695acd96ca1836b78)

Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-bsp/u-boot/u-boot-common.inc

@@ -18,4 +18,7 @@ SRC_URI = "git://source.denx.de/u-boot/u-boot.git;protocol=https;branch=master"
 
 S = "${WORKDIR}/git"
 B = "${WORKDIR}/build"
+
+inherit pkgconfig
+
 do_configure[cleandirs] = "${B}"