MIPS64: Fix InterpreterEntryTrampoline().

MIPS64: Fix InterpreterEntryTrampoline().

Was incorrectly loading BytecodeArray::kFrameSizeOffset as 64-bit int.

TEST=cctest/test-interpreter/TestInterpreterReturn
BUG=

Committed: https://crrev.com/567e2c63a1d166a3b7e82527a0bd45ab037c34d5
Cr-Commit-Position: refs/heads/master@{#30159}

[paul.l..., 2015-08-13 04:38:58]

paul.lind@imgtec.com changed reviewers:
+ akos.palfi@imgtec.com, djordje.pesut@imgtec.com, rmcilroy@chromium.org

[paul.l..., 2015-08-13 04:38:58]

Fix a mistake in my porting of https://codereview.chromium.org/1245133002 for
mips. PTAL.

[rmcilroy, 2015-08-13 06:23:31]

On 2015/08/13 04:38:58, paul.l... wrote:
> Fix a mistake in my porting of https://codereview.chromium.org/1245133002 for
> mips. PTAL.

Lgtm, thanks!

[paul.l..., 2015-08-13 14:02:29]

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

[commit-bot: I haz the power, 2015-08-13 14:02:37]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1286343002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1286343002/1

[commit-bot: I haz the power, 2015-08-13 14:27:09]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-13 14:27:23]

Patchset 1 (id:??) landed as
https://crrev.com/567e2c63a1d166a3b7e82527a0bd45ab037c34d5
Cr-Commit-Position: refs/heads/master@{#30159}