[PATCH] drm/rockchip: Add missing vmalloc header

[Krzysztof Kozlowski]

The Rockship DRM GEM code uses vmap()/vunmap() so vmalloc header must be
included to avoid warnings like (on IA64, compile tested):

    drivers/gpu/drm/rockchip/rockchip_drm_gem.c: In function ‘rockchip_gem_alloc_iommu’:
    drivers/gpu/drm/rockchip/rockchip_drm_gem.c:134:20: error:
        implicit declaration of function ‘vmap’ [-Werror=implicit-function-declaration]

Reported-by: kbuild test robot <lkp at intel.com>
Signed-off-by: Krzysztof Kozlowski <krzk at kernel.org>
---
 drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index 7582d0e6a60a..0d1884684dcb 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -6,6 +6,7 @@
 
 #include <linux/dma-buf.h>
 #include <linux/iommu.h>
+#include <linux/vmalloc.h>
 
 #include <drm/drm.h>
 #include <drm/drm_gem.h>
-- 
2.7.4