superio/smsc/sio1036: Clean up RAMstage superio.c component

Remove spurious includes, unused variables and some wasted new lines.
Re-organise things to be consistent with other superio's.

Change-Id: I959bab2f7a83a1b9160d7f010a0de9638b30cf07
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/6465
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>