[mlir] Add pass to enable Armv9 Streaming SVE mode

This patch adds a pass 'enable-arm-streaming' that enables the Armv9
Scalable Matrix Extension (SME) Streaming SVE (SSVE) mode [1] by adding
either of the following attributes to 'func.func' ops:

  * arm_streaming (default)
  * arm_locally_streaming

PATCH [2 / 2] in series for RFC: https://discourse.llvm.org/t/rfc-supporting-armv9-scalable-matrix-extension-sme-streaming-sve-ssve-mode-in-mlir/70678

[1] https://developer.arm.com/documentation/ddi0616/aa

Reviewed By: awarzynski, dcaballe

Differential Revision: https://reviews.llvm.org/D150934