scsi: cxlflash: s/semahpore/semaphore/

Fix misspellings of "semaphore".

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/d7d04004b818d7ab5d62002f286b0a1b0b493193.1681208251.git.geert+renesas@glider.be
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>