google/snow: rename a file so that it is clear what board it is for

One might wonder what a board named 'build' does. Rename the file to
build-snow. The fact that it is in a directory with google in the name
should be enough to identify the vendor.

Change-Id: I0b473cdce67d56fc6b92032b55180523eb337d66
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/2766
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
1 file changed