recipes: Add missing pkgconfig inherit

Various recipes were missing a pkgconfig inherit or pkgconfig-native
dependency despite using pkgconfig.

Add the inherit to igt-gpu-tools/gdb/libmodulemd/libwpe/xwayland/waffle
shaderc/iputils/wpebackend-fdo/lttng-ust/cargo.

(From OE-Core rev: 777d9744570c2dc119dc5d04985896bbb1da5885)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/cargo/cargo.inc

@@ -16,7 +16,7 @@ S = "${RUSTSRC}/src/tools/cargo"
 CARGO_VENDORING_DIRECTORY = "${RUSTSRC}/vendor"
 EXCLUDE_FROM_WORLD = "1"
 
-inherit cargo
+inherit cargo pkgconfig
 
 do_cargo_setup_snapshot () {
 	${WORKDIR}/rust-snapshot-components/${CARGO_SNAPSHOT}/install.sh --prefix="${WORKDIR}/${CARGO_SNAPSHOT}" --disable-ldconfig

meta/recipes-devtools/gdb/gdb-cross-canadian.inc

@@ -1,5 +1,6 @@
 inherit cross-canadian
 inherit python3-dir
+inherit pkgconfig
 
 SUMMARY = "GNU debugger (cross-canadian gdb for ${TARGET_ARCH} target)"
 PN = "gdb-cross-canadian-${TRANSLATED_TARGET_ARCH}"

meta/recipes-devtools/gdb/gdb-cross.inc

@@ -2,7 +2,7 @@ require gdb-common.inc
 
 DEPENDS = "expat-native ncurses-native flex-native bison-native"
 
-inherit python3native
+inherit python3native pkgconfig
 
 # Overrides PACKAGECONFIG variables in gdb-common.inc
 PACKAGECONFIG ??= "python readline ${@bb.utils.filter('DISTRO_FEATURES', 'debuginfod', d)}"

meta/recipes-devtools/gdb/gdb.inc

@@ -1,6 +1,6 @@
 require gdb-common.inc
 
-inherit gettext
+inherit gettext pkgconfig
 
 #LDFLAGS:append = " -s"
 #export CFLAGS:append=" -L${STAGING_LIBDIR}"

meta/recipes-devtools/libmodulemd/libmodulemd_git.bb

@@ -11,7 +11,7 @@ SRCREV = "1a032da198333ee77bdbe4be65e60eb4115ea73f"
 
 S = "${WORKDIR}/git"
 
-inherit meson gobject-introspection
+inherit meson gobject-introspection pkgconfig
 
 EXTRA_OEMESON = "-Dwith_py3=false -Dwith_docs=false -Drpmio=disabled -Dlibmagic=disabled -Dwith_manpages=disabled -Dgobject_overrides_dir_py3=${PYTHON_SITEPACKAGES_DIR}/gi/overrides"