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>
diff --git a/net-wireless/iw/iw-4.9-r1.ebuild b/net-wireless/iw/iw-4.9-r1.ebuild
new file mode 120000
index 0000000..348d061
--- /dev/null
+++ b/net-wireless/iw/iw-4.9-r1.ebuild
@@ -0,0 +1 @@
+iw-4.9.ebuild
\ No newline at end of file
diff --git a/net-wireless/iw/iw-4.9.ebuild b/net-wireless/iw/iw-4.9.ebuild
index c67656c..de6c97d 100644
--- a/net-wireless/iw/iw-4.9.ebuild
+++ b/net-wireless/iw/iw-4.9.ebuild
@@ -1,7 +1,7 @@
-# Copyright 1999-2015 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
-EAPI="5"
+EAPI=6
 
 inherit toolchain-funcs
 
@@ -19,6 +19,7 @@
 	virtual/pkgconfig"
 
 src_prepare() {
+	default
 	tc-export CC LD PKG_CONFIG
 }