targets/egl: add libnvc0.a to nouveau libs

src/gallium/targets/egl/Makefile

@@ -89,6 +89,7 @@ nouveau_LIBS := \
 	$(TOP)/src/gallium/winsys/nouveau/drm/libnouveaudrm.a \
 	$(TOP)/src/gallium/drivers/nvfx/libnvfx.a \
 	$(TOP)/src/gallium/drivers/nv50/libnv50.a \
+	$(TOP)/src/gallium/drivers/nvc0/libnvc0.a \
 	$(TOP)/src/gallium/drivers/nouveau/libnouveau.a
 
 # r300 pipe driver