V4L/DVB: gspca: Remove/move useless inclusions of slab.h

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/gspca/t613.c b/drivers/media/video/gspca/t613.c
index 4e8df33..f5d006b2 100644
--- a/drivers/media/video/gspca/t613.c
+++ b/drivers/media/video/gspca/t613.c
@@ -28,6 +28,7 @@
 
 #define MODULE_NAME "t613"
 
+#include <linux/slab.h>
 #include "gspca.h"
 
 #define V4L2_CID_EFFECTS (V4L2_CID_PRIVATE_BASE + 0)