scsi: libata: Add missing newline at end of file

With gcc 4.1.2:

    drivers/ata/libata-core.c:7396:33: warning: no newline at end of file

Fixes: 2fa4a326 ("scsi: libsas: dynamically allocate and free ata host")
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>