remove argument in snow's romstage main()

We don't pass any arguments into romstage on ARM.

Change-Id: I018f28a57fc486c9240345cf0f4043b79027d864
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2162
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
1 file changed