hpsa: Change SAS transport devices to bus 0.

SAS transport places devices on bus 0 but driver was setting the bus to
3.

Reviewed-by: Justin Lindley <[e-mail]>
Reviewed-by: Kevin Barnett <[e-mail]>
Reviewed-by: Scott Teel <[e-mail]>
Reviewed-by: Matthew R. Ochs <[e-mail]>
Reviewed-by: Hannes Reinecke <[e-mail]>
Signed-off-by: Don Brace <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/scsi/hpsa.h

···
 #define HPSA_PHYSICAL_DEVICE_BUS	0
 #define HPSA_RAID_VOLUME_BUS		1
 #define HPSA_EXTERNAL_RAID_VOLUME_BUS	2
-#define HPSA_HBA_BUS			3
+#define HPSA_HBA_BUS			0
 
 /*
 	Send the command to the hardware