pata_ninja32: Avoid corrupting status flags

Ninja32 needs to set some flags to indicate it does 32bit IO. However it currently assigns this which
loses the initializing flag and causes a warning spew. Fix it to use a logical or as is intended.
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Tested-by: NEllmar Stelnberger <estellnb@elstel.org>
Signed-off-by: NTejun Heo <tj@kernel.org>

drivers/ata/pata_ninja32.c

@@ -144,7 +144,7 @@ static int ninja32_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 	ap->ioaddr.altstatus_addr = base + 0x1E;
 	ap->ioaddr.bmdma_addr = base;
 	ata_sff_std_ports(&ap->ioaddr);
-	ap->pflags = ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE;
+	ap->pflags |= ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE;
 
 	ninja32_program(base);
 	/* FIXME: Should we disable them at remove ? */