iw: bump back to EAPI 6

Since the iw-4.9 uprev, we started supporting EAPI 6. This makes
applying patches a little easier, so let's sync back with the Gentoo
ebuild here.

BUG=b:117182901
TEST=build

Change-Id: I7f4ff3a644101c05cbfa7f6ec9dd59b3a13439b4
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1277880
Commit-Ready: Kirtika Ruchandani <kirtika@chromium.org>
Tested-by: Kirtika Ruchandani <kirtika@chromium.org>
Reviewed-by: Kirtika Ruchandani <kirtika@chromium.org>
2 files changed