scsi: ibmvfc: Use a bitfield for boolean flags

	struct ibmvfc_discover_targets_entry *disc_buf;

	struct mutex passthru_mutex;

	int max_vios_scsi_channels;

	int client_scsi_channels;

	int task_set;

	int init_retries;

	int discovery_threads;

	int abort_threads;

	int client_migrated;

	int reinit;

	int delay_init;

	int scan_complete;

	int client_migrated:1;

	int reinit:1;

	int delay_init:1;

	int logged_in:1;

	int mq_enabled:1;

	int using_channels:1;

	int do_enquiry:1;

	int aborting_passthru:1;

	int scan_complete:1;

	int scan_timeout;

	int logged_in;

	int mq_enabled;

	int using_channels;

	int do_enquiry;

	int client_scsi_channels;

	int aborting_passthru;

	int events_to_log;

#define IBMVFC_AE_LINKUP	0x0001

#define IBMVFC_AE_LINKDOWN	0x0002