media: exynos-gsc/exynos4-is: add missing 'struct' to kerneldoc

Fix kernel-doc warnings due to missing 'struct' keyword.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/platform/exynos-gsc/gsc-core.h

@@ -340,7 +340,7 @@ struct gsc_dev {
 };
 
 /**
- * gsc_ctx - the device context data
+ * struct gsc_ctx - the device context data
  * @s_frame:		source frame properties
  * @d_frame:		destination frame properties
  * @in_path:		input mode (DMA or camera)

drivers/media/platform/exynos4-is/fimc-core.h

@@ -453,7 +453,7 @@ struct fimc_ctrls {
 };
 
 /**
- * fimc_ctx - the device context data
+ * struct fimc_ctx - the device context data
  * @s_frame:		source frame properties
  * @d_frame:		destination frame properties
  * @out_order_1p:	output 1-plane YCBCR order