mesa3d-headers: fix installation of dri.pc

/usr/lib/pkg-config/ is not the correct installation path for .pc files,
it should be in /usr/lib/pkgconfig/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/mesa3d-headers/mesa3d-headers.mk

@@ -47,7 +47,7 @@ define MESA3D_HEADERS_INSTALL_DRI_PC
 	$(INSTALL) -D -m 0644 $(@D)/include/GL/internal/dri_interface.h \
 		$(STAGING_DIR)/usr/include/GL/internal/dri_interface.h
 	$(INSTALL) -D -m 0644 $(@D)/src/mesa/drivers/dri/dri.pc \
-		$(STAGING_DIR)/usr/lib/pkg-config/dri.pc
+		$(STAGING_DIR)/usr/lib/pkgconfig/dri.pc
 endef
 
 endif # Xorg