Various changes to fix CI pipeline build errors

- Add rhs packing assembly files to matmul_clamp_f32_qai8dxp_qsi4c32p
  example
- Add rhs packing assembly files to Bazel
- Remove duplicate definitions of KAI_ASM_* defines

Signed-off-by: Jens Elofsson <jens.elofsson@arm.com>