media: xc4000: get rid of uneeded casts

Instead of doing casts, use %zd to print sizes, in order to make
smatch happier:
	drivers/media/tuners/xc4000.c:818 xc4000_fwupload() warn: argument 4 to %d specifier is cast from pointer
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/tuners/xc4000.c

@@ -815,9 +815,9 @@ static int xc4000_fwupload(struct dvb_frontend *fe)
 		p += sizeof(size);
 
 		if (!size || size > endp - p) {
-			printk(KERN_ERR "Firmware type (%x), id %llx is corrupted (size=%d, expected %d)\n",
+			printk(KERN_ERR "Firmware type (%x), id %llx is corrupted (size=%zd, expected %d)\n",
 			       type, (unsigned long long)id,
-			       (unsigned)(endp - p), size);
+			       endp - p, size);
 			goto corrupt;
 		}