mtd: docg4: fix printk() warnings

Gcc complains here:
drivers/mtd/nand/docg4.c: In function ‘probe_docg4’:
drivers/mtd/nand/docg4.c:1277:4: warning: format ‘%x’ expects argument of type ‘unsigned int’, but argument 3 has type ‘resource_size_t’ [-Wformat]
drivers/mtd/nand/docg4.c:1277:4: warning: format ‘%x’ expects argument of type ‘unsigned int’, but argument 4 has type ‘resource_size_t’ [-Wformat]

We have a standard way of printing these using a format string
extension.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/nand/docg4.c

@@ -1270,9 +1270,7 @@ static int __init probe_docg4(struct platform_device *pdev)
 
 	virtadr = ioremap(r->start, resource_size(r));
 	if (!virtadr) {
-		dev_err(dev, "Diskonchip ioremap failed: "
-			"0x%x bytes at 0x%x\n",
-			resource_size(r), r->start);
+		dev_err(dev, "Diskonchip ioremap failed: %pR\n", r);
 		return -EIO;
 	}