MIPS: Fix another bug in mozilla regress-396684.js

MIPS: Fix another bug with mozilla regress-396684.js

As with TF fix 94506cc3, correctly support absurdly large stack
adjustments.

TEST=mozilla/js/tests/js1_5/Regress/regress-396684.js
BUG=

Committed: https://crrev.com/6b03f2233f79f6f83cf96a54580d1a93405cb63a
Cr-Commit-Position: refs/heads/master@{#27592}

[paul.l..., 2015-04-02 14:38:50]

paul.lind@imgtec.com changed reviewers:
+ akos.palfi@imgtec.com, balazs.kilvady@imgtec.com, danno@chromium.org,
dusan.milosavljevic@imgtec.com

[paul.l..., 2015-04-02 14:38:50]

PTAL.

[dusmil.imgtec, 2015-04-02 14:42:18]

LGTM.

[paul.l..., 2015-04-02 14:59:19]

The CQ bit was checked by paul.lind@imgtec.com

[commit-bot: I haz the power, 2015-04-02 14:59:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1057763002/1

[commit-bot: I haz the power, 2015-04-02 15:19:54]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-02 15:20:04]

Patchset 1 (id:??) landed as
https://crrev.com/6b03f2233f79f6f83cf96a54580d1a93405cb63a
Cr-Commit-Position: refs/heads/master@{#27592}