[PATCH] drm: drm_pci.h: add missing include

[Jérémy Lefaure]

The structure platform_device is used in drm_pci.h without including
plaform_device.h so the compiler raises a warning:

In file included from drivers/gpu/drm/drm_pci.c:29:0:
./include/drm/drm_pci.h:76:64: warning: ‘struct platform_device’
declared inside parameter list
 extern int drm_platform_init(struct drm_driver *driver,
 struct platform_device *platform_device);
        ^

Fixes: 23ef59ef6dcc ("drm: Extract drm_pci.h")
Signed-off-by: Jérémy Lefaure <jeremy.lefaure at lse.epita.fr>
---
 include/drm/drm_pci.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/drm/drm_pci.h b/include/drm/drm_pci.h
index 5081b3e..3697a41 100644
--- a/include/drm/drm_pci.h
+++ b/include/drm/drm_pci.h
@@ -33,6 +33,7 @@
 #define _DRM_PCI_H_
 
 #include <linux/pci.h>
+#include <linux/platform_device.h>
 
 struct drm_dma_handle;
 struct drm_device;
-- 
2.1.4