blake2: fix RIP register access for AVX/AVX2 implementations
* cipher/blake2b-amd64-avx2.S: Use rRIP instead of (RIP). * cipher/blake2s-amd64-avx.S: Use rRIP instead of (RIP).
- Reported-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>