EXYNOS: Change bits per pixel value proper for u-boot.

vl_bpix of vidinfo_t was changed proper value for u-boot.
It is used to multiple of 2 by using NBITS() macro.

Signed-off-by: Donghwa Lee <dh09.lee@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/drivers/video/exynos_fb.c b/drivers/video/exynos_fb.c
index 0eb7f58..a1cf449 100644
--- a/drivers/video/exynos_fb.c
+++ b/drivers/video/exynos_fb.c
@@ -52,7 +52,7 @@
 	unsigned long palette_size;
 	unsigned int fb_size;
 
-	fb_size = vid->vl_row * vid->vl_col * (vid->vl_bpix >> 3);
+	fb_size = vid->vl_row * vid->vl_col * (NBITS(vid->vl_bpix) >> 3);
 
 	lcd_base = lcdbase;