[arm] Fix platform requirements for ldrd and strd.

[arm] Fix platform requirements for ldrd and strd.

These instructions were available before V8's baseline (ARMv6). V8 can
always assume that they're present.

BUG=

Committed: https://crrev.com/b5413f7e943dcb63058e31679988379c0f7f53bf
Cr-Commit-Position: refs/heads/master@{#36280}

[jbramley, 2016-05-17 08:52:58]

jacob.bramley@arm.com changed reviewers:
+ bmeurer@chromium.org, jarin@chromium.org

[epertoso, 2016-05-17 12:30:46]

epertoso@chromium.org changed reviewers:
+ epertoso@chromium.org

[epertoso, 2016-05-17 12:30:46]

lgtm

[jbramley, 2016-05-17 12:36:26]

The CQ bit was checked by jacob.bramley@arm.com

[commit-bot: I haz the power, 2016-05-17 12:36:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1985013002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1985013002/1

[commit-bot: I haz the power, 2016-05-17 13:25:06]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-17 13:26:40]

Description was changed from

==========
[arm] Fix platform requirements for ldrd and strd.

These instructions were available before V8's baseline (ARMv6). V8 can
always assume that they're present.

BUG=
==========

to

==========
[arm] Fix platform requirements for ldrd and strd.

These instructions were available before V8's baseline (ARMv6). V8 can
always assume that they're present.

BUG=

Committed: https://crrev.com/b5413f7e943dcb63058e31679988379c0f7f53bf
Cr-Commit-Position: refs/heads/master@{#36280}
==========

[commit-bot: I haz the power, 2016-05-17 13:26:42]

Patchset 1 (id:??) landed as
https://crrev.com/b5413f7e943dcb63058e31679988379c0f7f53bf
Cr-Commit-Position: refs/heads/master@{#36280}