rinjdael-aes: use zero offset vector load/store when possible
* cipher/rijndael-ppc-common.h (asm_aligned_ld, asm_aligned_st): Use zero offset instruction variant when input offset is constant zero. * cipher/rijndael-ppc.c (asm_load_be_noswap) (asm_store_be_noswap): Likewise.
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>