glib-2.0: no need to depend on target gtk-doc

The meson.build looks for a target gtk-doc, but it should be looking for
the native package.

Fixing this means we can drop the need for a target gtk-doc package.

(From OE-Core rev: f91694fa8f5c2c3e6f4946300f040677cb0828fd)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/glib-2.0/glib-2.0/native-gtkdoc.patch

@@ -0,0 +1,21 @@
+docs/reference: depend on a native gtk-doc
+
+In a cross-compiled environment we don't need a target gtk-doc, but a
+native gtk-doc.
+
+Upstream-Status: Backport [f3ff370d1b24f8afb51cd4e865593d5b678188a9]
+Signed-off-by: Ross Burton <ross.burton@arm.com>
+
+diff --git a/docs/reference/meson.build b/docs/reference/meson.build
+index c417ffecb..67c1dda56 100644
+--- a/docs/reference/meson.build
++++ b/docs/reference/meson.build
+@@ -42,7 +42,7 @@ ignore_decorators = '|'.join(ignore_decorators)
+ if get_option('gtk_doc')
+   # Check we have the minimum gtk-doc version required. Older versions won't
+   # generate correct documentation.
+-  dependency('gtk-doc', version : '>=1.32.1',
++  dependency('gtk-doc', version : '>=1.32.1', native: true,
+     fallback : ['gtk-doc', 'dummy_dep'],
+     default_options : ['tests=false'])
+ 

meta/recipes-core/glib-2.0/glib-2.0_2.78.3.bb

@@ -14,6 +14,7 @@ SRC_URI = "${GNOME_MIRROR}/glib/${SHRT_VER}/glib-${PV}.tar.xz \
            file://0001-Do-not-write-bindir-into-pkg-config-files.patch \
            file://0001-meson-Run-atomics-test-on-clang-as-well.patch \
            file://0001-gio-tests-resources.c-comment-out-a-build-host-only-.patch \
+           file://native-gtkdoc.patch \
            "
 SRC_URI:append:class-native = " file://relocate-modules.patch \ 
                                 file://0001-meson.build-do-not-enable-pidfd-features-on-native-g.patch \

meta/recipes-core/glib-2.0/glib.inc

@@ -30,8 +30,6 @@ LEAD_SONAME = "libglib-2.0.*"
 
 inherit meson gettext gtk-doc pkgconfig ptest-gnome upstream-version-is-even bash-completion gio-module-cache manpages
 
-DEPENDS:append:class-target = "${@' gtk-doc' if d.getVar('GTKDOC_ENABLED') == 'True' else ''}"
-
 GTKDOC_MESON_OPTION = "gtk_doc"
 
 S = "${WORKDIR}/glib-${PV}"