staging: gpib: fix prefixing 0x with decimal output

* pr_err() of request_region() in cb7210 uses 0x%u which is defective.
* The config->ibbase is of u32 and correct prefix is 0x%x.
* This error reported by checkpatch with below message:
  ERROR: Prefixing 0x with decimal output is defective

Signed-off-by: Ajith P V <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Ajith P V

drivers/staging/gpib/cb7210/cb7210.c

@@ -1041,7 +1041,7 @@ int cb_isa_attach(gpib_board_t *board, const gpib_board_config_t *config)
 	cb_priv = board->private_data;
 	nec_priv = &cb_priv->nec7210_priv;
 	if (!request_region(config->ibbase, cb7210_iosize, "cb7210")) {
-		pr_err("gpib: ioports starting at 0x%u are already in use\n", config->ibbase);
+		pr_err("gpib: ioports starting at 0x%x are already in use\n", config->ibbase);
 		return -EIO;
 	}
 	nec_priv->iobase = config->ibbase;