Add rule to build libdrm package.

Change-Id: I841dafacac3a93fe9df5812aa3bf20e83fb79e70
diff --git a/packages.mk b/packages.mk
index a2b486f..a2651e2 100644
--- a/packages.mk
+++ b/packages.mk
@@ -23,11 +23,12 @@
 $(eval $(call make-pbuilder-bsp-package-target,mtk-board-audio,packages/mtk-board-audio))
 $(eval $(call make-pbuilder-bsp-package-target,meta-excelsior,packages/meta-excelsior))
 $(eval $(call make-pbuilder-bsp-package-target,excelsior-nvram,packages/excelsior-nvram))
-$(eval $(call make-pbuilder-bsp-package-target,excelsior-img-fw,graphics/img-fw))
+$(eval $(call make-pbuilder-bsp-package-target,excelsior-img-fw,graphics/img-fw, libdrm))
 $(eval $(call make-pbuilder-bsp-package-target,wayland-protocols-mtk,graphics/wayland/wayland-protocols))
 $(eval $(call make-pbuilder-bsp-package-target,weston-mtk,graphics/wayland/weston, wayland-protocols-mtk mesa-mtk))
-$(eval $(call make-pbuilder-bsp-package-target,mesa-mtk,graphics/mesa))
+$(eval $(call make-pbuilder-bsp-package-target,mesa-mtk,graphics/mesa, libdrm))
 $(eval $(call make-pbuilder-bsp-package-target,excelsior-mtkcam-prebuilts,packages/excelsior-mtkcam-prebuilts))
 $(eval $(call make-pbuilder-bsp-package-target,excelsior-mtkcam,packages/excelsior-mtkcam,excelsior-mtkcam-prebuilts android-core excelsior-nvram))
 $(eval $(call make-pbuilder-bsp-package-target,glmark2,graphics/glmark2,weston-mtk))
 $(eval $(call make-pbuilder-bsp-package-target,excelsior-vpu-prebuilts,multimedia/vpu))
+$(eval $(call make-pbuilder-bsp-package-target,libdrm,packages/libdrm))