scsi: powertec: Declare local function static

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20240603172311.1587589-5-bvanassche@acm.org
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/arm/powertec.c

@@ -184,7 +184,7 @@ powertecscsi_dma_stop(struct Scsi_Host *host, struct scsi_pointer *SCp)
  * Params   : host - driver host structure to return info for.
  * Returns  : pointer to a static buffer containing null terminated string.
  */
-const char *powertecscsi_info(struct Scsi_Host *host)
+static const char *powertecscsi_info(struct Scsi_Host *host)
 {
 	struct powertec_info *info = (struct powertec_info *)host->hostdata;
 	static char string[150];