xkeyboard-config: stage the pkg-config file

The package builds xkeyboard-config-2.pc and a compatibility symlink
to it, but installs neither into the staging directory, so anything
asking pkg-config for xkeyboard-config fails to configure. plymouth
does, for the xkb_base path.

Install both names; the symlink alone leaves a dangling link.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

libs/xkeyboard-config/Makefile

@@ -2,7 +2,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=xkeyboard-config
 PKG_VERSION:=2.45
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=http://www.x.org/releases/individual/data/$(PKG_NAME)/
@@ -42,6 +42,12 @@ define Package/xkeyboard-config/description
   The non-arch keyboard configuration database for X Window.
 endef
 
+define Build/InstallDev
+	$(INSTALL_DIR) $(1)/usr/share/pkgconfig
+	$(CP) $(PKG_INSTALL_DIR)/usr/share/pkgconfig/xkeyboard-config*.pc \
+		$(1)/usr/share/pkgconfig/
+endef
+
 define Package/xkeyboard-config/install
 	$(INSTALL_DIR) $(1)/usr/share/xkeyboard-config-2
 	$(CP) $(PKG_INSTALL_DIR)/usr/share/xkeyboard-config-2/* $(1)/usr/share/xkeyboard-config-2