scsi: a100u2w: Replace mdelay() with msleep()

wait_chip_ready() and wait_firmware_ready() are never called in atomic
context.  They call mdelay() to busy wait which is not necessary.  mdelay()
can be replaced with msleep().

This is found by a static analysis tool named DCNS written by myself.
Signed-off-by: NJia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/a100u2w.c

@@ -143,7 +143,7 @@ static u8 wait_chip_ready(struct orc_host * host)
 	for (i = 0; i < 10; i++) {	/* Wait 1 second for report timeout     */
 		if (inb(host->base + ORC_HCTRL) & HOSTSTOP)	/* Wait HOSTSTOP set */
 			return 1;
-		mdelay(100);
+		msleep(100);
 	}
 	return 0;
 }
@@ -155,7 +155,7 @@ static u8 wait_firmware_ready(struct orc_host * host)
 	for (i = 0; i < 10; i++) {	/* Wait 1 second for report timeout     */
 		if (inb(host->base + ORC_HSTUS) & RREADY)		/* Wait READY set */
 			return 1;
-		mdelay(100);	/* wait 100ms before try again  */
+		msleep(100);	/* wait 100ms before try again  */
 	}
 	return 0;
 }