bzip license: bzip2 not bzip.

The name of the license for bzip2 is wrong causing warnings
to be thrown.

Signed-off-by: Elizabeth Flanagan <elizabeth.flanagan@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/files/common-licenses/bzip b/meta/files/common-licenses/bzip2
similarity index 100%
rename from meta/files/common-licenses/bzip
rename to meta/files/common-licenses/bzip2