meta-phosphor:meson: pkgconfig inherit required

Upstream yocto made a change recently that brought to light a bug in
some of our recipes. If your meson makefiles utilize the dependency()
function then the recipe must also include pkgconfig.

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: Ie85e2a3bd86010c2ce5d08c75fddc1ba348ff891
diff --git a/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb b/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb
index 1d08075..3b2eb44 100644
--- a/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb
+++ b/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb
@@ -5,7 +5,7 @@
 LICENSE = "Apache-2.0"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=fa818a259cbed7ce8bc2a22d35a464fc"
 
-inherit meson
+inherit pkgconfig meson
 inherit obmc-phosphor-systemd
 
 PACKAGECONFIG ??= ""