ice: devlink: use %*phD to print small buffer

Use %*phD format to print small buffer as hex string.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/intel/ice/ice_devlink.c

@@ -13,9 +13,7 @@ static int ice_info_get_dsn(struct ice_pf *pf, char *buf, size_t len)
 	/* Copy the DSN into an array in Big Endian format */
 	put_unaligned_be64(pci_get_dsn(pf->pdev), dsn);
 
-	snprintf(buf, len, "%02x-%02x-%02x-%02x-%02x-%02x-%02x-%02x",
-		 dsn[0], dsn[1], dsn[2], dsn[3],
-		 dsn[4], dsn[5], dsn[6], dsn[7]);
+	snprintf(buf, len, "%8phD", dsn);
 
 	return 0;
 }