gallium: Only build intel_drm for linux-dri targets

configs/default

@@ -71,7 +71,7 @@ PROGRAM_DIRS = demos redbook samples glsl xdemos
 GALLIUM_AUXILIARY_DIRS = draw cso_cache pipebuffer tgsi sct translate rtasm util
 GALLIUM_AUXILIARIES = $(foreach DIR,$(GALLIUM_AUXILIARY_DIRS),$(TOP)/src/gallium/auxiliary/$(DIR)/lib$(DIR).a)
 GALLIUM_DRIVER_DIRS = softpipe i915simple i965simple failover
-GALLIUM_WINSYS_COMMON_DIRS = intel_drm
+GALLIUM_WINSYS_COMMON_DIRS =
 GALLIUM_DRIVERS = $(foreach DIR,$(GALLIUM_DRIVER_DIRS),$(TOP)/src/gallium/drivers/$(DIR)/lib$(DIR).a)
 GALLIUM_WINSYS_DIRS = xlib egl_xlib
 

configs/linux-dri

@@ -64,6 +64,7 @@ endif
 DRIVER_DIRS = dri
 WINDOW_SYSTEM = dri
 GALLIUM_WINSYS_DIRS = dri egl_xlib
+GALLIUM_WINSYS_COMMON_DIRS = intel_drm
 
 # gamma are missing because they have not been converted to use the new
 # interface.