libata: Avoid overflow in libata when tf->hba_lbal > 127

Combination of these two upstream patches:

ba14a9c291aa867896a90b3571fcc1c3759942ff
libata: Avoid overflow in ata_tf_to_lba48() when tf->hba_lbal > 127

44901a96847b9967c057832b185e2f34ee6a14e5
libata: Avoid overflow in ata_tf_read_block() when tf->hba_lbal > 127

Originally written by Roland Dreier, but backported by Chuck.

Cc: Roland Dreier <rdreier@cisco.com>
Cc: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>