ata: sata_nv: drop pointless VPRINTK() calls and convert remaining ones

Quite some information from the VPRINTK() is already covered by
tracepoints, so remove the pointless calls and convert the remaining
ones to structured logging.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>