CHROMIUM: Add B43 driver for generic builds

There doesn't seem to be any issue with enabling the B43 driver and it
will allow people to run ChromiumOS on more hardware.

BUG=none
TEST=manual
`emerge-amd64-generic chromeos-kernel-3_14` and see that b43.ko exists
in the build directory.

Change-Id: I8ca1c3aba507ef9bf35213e30cdf5a81a83b3ca3
Signed-off-by: Chirantan Ekbote <chirantan@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/201483
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Ben Zhang <benzh@chromium.org>
Reviewed-by: Olof Johansson <olofj@chromium.org>
8 files changed