crypto: omap-des - make local functions static

Make omap_des_copy_needed(), omap_des_copy_sgs(), because these
functions are used only in this file.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/omap-des.c

@@ -535,7 +535,7 @@ static int omap_des_crypt_dma_stop(struct omap_des_dev *dd)
 	return err;
 }
 
-int omap_des_copy_needed(struct scatterlist *sg)
+static int omap_des_copy_needed(struct scatterlist *sg)
 {
 	while (sg) {
 		if (!IS_ALIGNED(sg->offset, 4))
@@ -547,7 +547,7 @@ int omap_des_copy_needed(struct scatterlist *sg)
 	return 0;
 }
 
-int omap_des_copy_sgs(struct omap_des_dev *dd)
+static int omap_des_copy_sgs(struct omap_des_dev *dd)
 {
 	void *buf_in, *buf_out;
 	int pages;