scsi: bnx2fc: Make use of the helper macro kthread_run()

Repalce kthread_create/wake_up_process() with kthread_run() to simplify the
code.

Link: https://lore.kernel.org/r/20220126014248.466806-1-yinxiujiang@kylinos.cn


Signed-off-by: Yin Xiujiang <yinxiujiang@kylinos.cn>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>