PPC/s390: [wasm-simd][liftoff] Support SIMD locals

Port ba14c2f3

Original Commit Message:

    Add kWasmS128 to the list of supported types, and implement Fill for all
    the architectures so that LocalGet works.

    Add a new test file to contain tests that run only on Liftoff, and
    assert that the code is indeed compiled by Liftoff.
    We cannot rely on the nooptimization variant for testing
    because by default, if Liftoff compilation fails, it will fall back to
    Turbofan, and we accidentally get a test passing.

    We skip these tests on mips architecture that don't support SIMD, since
    there is no way to implement these, and we don't have a "lowering" phase
    for Liftoff.

    As we implement more of SIMD in Liftoff, we can add more
    tests to this file and ensure correctness. Future patches will introduce
    support for globals and params.

R=zhin@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: I776b3d93dd4dc53641650ac30b26661e52142287
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2002688Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#65792}

test/cctest/cctest.status

@@ -386,6 +386,9 @@
   # Liftoff is not currently supported on ppc and s390
   'test-liftoff-*': [SKIP],
 
+  # SIMD not fully implemented yet
+  'test-run-wasm-simd-liftoff/*': [SKIP],
+
 }],  # 'arch == ppc or arch == ppc64 or arch == s390 or arch == s390x'
 
 ['arch == ppc64', {