scsi: core: bsg: Remove usage of the deprecated ida_simple_xxx() API

Use ida_alloc_xxx()/ida_free() instead of
ida_simple_get()/ida_simple_remove().

The latter is deprecated and more verbose.

Link: https://lore.kernel.org/r/20220617020430.2300-1-liubo03@inspur.com


Signed-off-by: Bo Liu <liubo03@inspur.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>