GitLab

std::string is not used correctly with ioctl() and hence fails to get
the field info. Replace it with C string.

Bug: 827452
Change-Id: Iace6ce24a6405c40a68eeff71c090883b847a46f
Component: Event Device Info, phys
Reviewed-on: https://chromium-review.googlesource.com/1014409Reviewed-by: Michael Spang <spang@chromium.org>
Commit-Queue: Malay Keshav <malaykeshav@chromium.org>
Cr-Commit-Position: refs/heads/master@{#551381}