PPC/s390: enable a few tests

Change-Id: I7d71c8cf4f7c0d1b833dc560b0d7418b1739e81a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1508595
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Auto-Submit: Junliang Yan <jyan@ca.ibm.com>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60113}

test/cctest/cctest.status

@@ -411,9 +411,6 @@
 ##############################################################################
 ['arch == ppc or arch == ppc64 or arch == s390 or arch == s390x', {
 
-  # TODO(ppc/s390): implement atomic operations
-  'test-run-wasm-atomics/*': [SKIP],
-
   # TODO(ppc/s390): support concurrent patching of jump table
   'test-jump-table-assembler/*': [SKIP],
 

test/mjsunit/mjsunit.status

@@ -876,15 +876,6 @@
   'regress/regress-353551': [SKIP],
 }],  # 'arch == ppc64'
 
-##############################################################################
-['arch == ppc64 or arch == ppc or arch == s390 or arch == s390x', {
-
-  # TODO(ppc/s390): fix constant pool issue and implement tagging for reloc
-  'wasm/compiled-module-serialization': [SKIP],
-  'regress/wasm/regress-808980': [SKIP],
-  'regress/wasm/regress-808848': [SKIP],
-}],  # 'arch == ppc64 or arch == ppc or arch == s390 or arch == s390x'
-
 ##############################################################################
 ['variant == stress', {
   # Slow tests.