[mips64] Correct mjsunit test status.

regress-976627 is pass and should pass on mips64el,
see 4c156936 https://crrev.com/c/1674027

Change-Id: I4da905ea129a78988d75e5b19cca3a4e5a17fdcb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1679960
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Auto-Submit: Yu Yin <xwafish@gmail.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62459}

test/mjsunit/mjsunit.status

@@ -244,7 +244,7 @@
 
   # Test doesn't work on 32-bit architectures (it would require a
   # regexp pattern with too many captures).
-  'regress/regress-976627': [FAIL, ['arch == x64 or arch == arm64', PASS]],
+  'regress/regress-976627': [FAIL, ['arch == x64 or arch == arm64 or arch == mips64el', PASS]],
 }],  # ALWAYS
 
 ['novfp3 == True', {