drm/gma500: Unify _get_core_freq for cdv and psb

Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
diff --git a/drivers/gpu/drm/gma500/Makefile b/drivers/gpu/drm/gma500/Makefile
index 69c0d7f..b153155 100644
--- a/drivers/gpu/drm/gma500/Makefile
+++ b/drivers/gpu/drm/gma500/Makefile
@@ -17,6 +17,7 @@
 	  power.o \
 	  psb_drv.o \
 	  gma_display.o \
+	  gma_device.o \
 	  psb_intel_display.o \
 	  psb_intel_lvds.o \
 	  psb_intel_modes.o \