rijndael-ssse3: fix functions calls from assembly blocks
* cipher/rijndael-ssse3-amd64.c (PUSH_STACK_PTR, POP_STACK_PTR): New. (vpaes_ssse3_prepare_enc, vpaes_ssse3_prepare_dec) (_gcry_aes_ssse3_do_setkey, _gcry_aes_ssse3_prepare_decryption) (do_vpaes_ssse3_enc, do_vpaes_ssse3_dec): Use PUSH_STACK_PTR and POP_STACK_PTR.
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>