Add new contributor to the file AUTHORS

Add new contributor to the file AUTHORS

"Youngsoo Choi <kenshin.choi@samsung.com>" is included in AUTHORS.

Signed-off-by: Youngsoo Choi <kenshin.choi@samsung.com>;

BUG=

Committed: https://crrev.com/74e92fe1cbddc133ee3dc30abd9f501b8c95fdd5
Cr-Commit-Position: refs/heads/master@{#349705}

[Youngsoo Choi, 2015-09-18 06:59:39]

kenshin.choi@samsung.com changed reviewers:
+ pdr@chromium.org

[Youngsoo Choi, 2015-09-18 06:59:39]

Hope you review this initial patch for CLA.

Thanks

[pdr., 2015-09-18 17:30:33]

The CQ bit was checked by pdr@chromium.org

[pdr., 2015-09-18 17:30:34]

lgtm

[commit-bot: I haz the power, 2015-09-18 17:30:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1343303004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1343303004/1

[commit-bot: I haz the power, 2015-09-18 17:42:59]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-18 17:43:48]

Patchset 1 (id:??) landed as
https://crrev.com/74e92fe1cbddc133ee3dc30abd9f501b8c95fdd5
Cr-Commit-Position: refs/heads/master@{#349705}