This patch adds the first integration test for ArmSME in Linalg. It
fills a 2-d scalable vector that represents an SME ZA tile with a
pre-defined f32 value and prints it to stdout.
This test is predicated on the MLIR_RUN_ARM_SME_TESTS configuration flag
being set to true.
Depends on D158586
Reviewed By: awarzynski
Differential Revision: https://reviews.llvm.org/D158619
c555308d4f