drm/omap: no need to select OMAP2_DSS

omapdss driver now depends on omapdrm, so we no longer should select
OMAP2_DSS from omapdrm's Kconfig.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/gpu/drm/omapdrm/Kconfig b/drivers/gpu/drm/omapdrm/Kconfig
index 336ad4d..73241c4 100644
--- a/drivers/gpu/drm/omapdrm/Kconfig
+++ b/drivers/gpu/drm/omapdrm/Kconfig
@@ -2,7 +2,6 @@
 	tristate "OMAP DRM"
 	depends on DRM
 	depends on ARCH_OMAP2PLUS || ARCH_MULTIPLATFORM
-	select OMAP2_DSS
 	select DRM_KMS_HELPER
 	select DRM_KMS_FB_HELPER
 	select FB_SYS_FILLRECT