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