[PATCH v2] drm: tegra: Include DMA API header where used

[Robin Murphy]

Even though the IOVA API never actually needed it, iova.h is still
carrying an include of dma-mapping.h, now solely for the sake of not
breaking tegra-drm. Fix that properly.

Signed-off-by: Robin Murphy <robin.murphy at arm.com>
---

v2: Apparently nvdec.c needs one now too.

 drivers/gpu/drm/tegra/dc.c    | 1 +
 drivers/gpu/drm/tegra/hub.c   | 1 +
 drivers/gpu/drm/tegra/nvdec.c | 1 +
 drivers/gpu/drm/tegra/plane.c | 1 +
 4 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index c6951cf5d2ca..bfc79c61bca6 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -7,6 +7,7 @@
 #include <linux/clk.h>
 #include <linux/debugfs.h>
 #include <linux/delay.h>
+#include <linux/dma-mapping.h>
 #include <linux/iommu.h>
 #include <linux/interconnect.h>
 #include <linux/module.h>
diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c
index b8d3174c04c9..5f9b85959fae 100644
--- a/drivers/gpu/drm/tegra/hub.c
+++ b/drivers/gpu/drm/tegra/hub.c
@@ -5,6 +5,7 @@
 
 #include <linux/clk.h>
 #include <linux/delay.h>
+#include <linux/dma-mapping.h>
 #include <linux/host1x.h>
 #include <linux/module.h>
 #include <linux/of.h>
diff --git a/drivers/gpu/drm/tegra/nvdec.c b/drivers/gpu/drm/tegra/nvdec.c
index 79e1e88203cf..b412cc5c6db2 100644
--- a/drivers/gpu/drm/tegra/nvdec.c
+++ b/drivers/gpu/drm/tegra/nvdec.c
@@ -5,6 +5,7 @@
 
 #include <linux/clk.h>
 #include <linux/delay.h>
+#include <linux/dma-mapping.h>
 #include <linux/host1x.h>
 #include <linux/iommu.h>
 #include <linux/module.h>
diff --git a/drivers/gpu/drm/tegra/plane.c b/drivers/gpu/drm/tegra/plane.c
index e0e6938c6200..e46adb107f77 100644
--- a/drivers/gpu/drm/tegra/plane.c
+++ b/drivers/gpu/drm/tegra/plane.c
@@ -3,6 +3,7 @@
  * Copyright (C) 2017 NVIDIA CORPORATION.  All rights reserved.
  */
 
+#include <linux/dma-mapping.h>
 #include <linux/iommu.h>
 #include <linux/interconnect.h>
 
-- 
2.28.0.dirty