Added CRC compute APIs for arm64 utilizing the pmull
capability.
Added new file net_crc_neon.h to hold the arm64 pmull
CRC implementation.
Added wrappers in rte_vect.h for those neon intrinsics
which are not supported in GCC version < 7.
Verified the changes with crc_autotest unit test case
Signed-off-by: Ashwin Sekhar T K <ashwin.sekhar@caviumnetworks.com>
Acked-by: Jianbo Liu <jianbo.liu@linaro.org>
a566400e8b