Hi,

This patch add support for FEAT_SME2p1 and "movaz" instructions
along with the optional flag +sme2p1.

Following "movaz" instructions are add:
Move and zero two ZA tile slices to vector registers.
Move and zero four ZA tile slices to vector registers.

Regression testing for aarch64-none-elf target and found no regressions.

Ok for binutils-master?

Regards,
Srinath.