drm/msm/sde: Add support for reg dma

sde supports reg dma block which can speed-up register programming for
supported blocks.Change adds support for reg dma frame and version 1 ops
implementation.

Change-Id: I4f48b6ba0f63870d778b6b1bcff51aa703a462a9
Signed-off-by: Gopikrishnaiah Anandan <agopik@codeaurora.org>
diff --git a/drivers/gpu/drm/msm/sde/sde_kms.h b/drivers/gpu/drm/msm/sde/sde_kms.h
index 558c47a..0550b19 100644
--- a/drivers/gpu/drm/msm/sde/sde_kms.h
+++ b/drivers/gpu/drm/msm/sde/sde_kms.h
@@ -131,7 +131,7 @@
 	struct dentry *debugfs_vbif;
 
 	/* io/register spaces: */
-	void __iomem *mmio, *vbif[VBIF_MAX];
+	void __iomem *mmio, *vbif[VBIF_MAX], *reg_dma;
 
 	struct regulator *vdd;
 	struct regulator *mmagic;