riscv: always use -mstrict-align for vector intrinsic implementations
* cipher/Makefile.am (riscv_vector_cflags, riscv_vector_crypto_cflags): Use "-mstrict-align" if SUPPORT_CC_RISCV_MSTRICT_ALIGN is set. * configure.ac (SUPPORT_CC_RISCV_MSTRICT_ALIGN): Add check for "-mstrict-align" compiler flag support.
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>