drm/exynos: correct some comments to abbreviation.

This patch cleanup corrects some comments to abbreviation.
We would like to prevent it stands misunderstood.

Signed-off-by: Eunchul Kim <chulspro.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimc.c b/drivers/gpu/drm/exynos/exynos_drm_fimc.c
index abfff9e..8cfc5a9 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimc.c
@@ -25,7 +25,7 @@
 #include "exynos_drm_fimc.h"
 
 /*
- * FIMC is stand for Fully Interactive Mobile Camera and
+ * FIMC stands for Fully Interactive Mobile Camera and
  * supports image scaler/rotator and input/output DMA operations.
  * input DMA reads image data from the memory.
  * output DMA writes image data to memory.