onenand:samsung Target dependent OneNAND chip probe function

Separate callback for probing OneNAND memory chip.
If no special function is defined, default implementation will be used.

This approach gives more flexibility for OneNAND device probing.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
diff --git a/include/linux/mtd/samsung_onenand.h b/include/linux/mtd/samsung_onenand.h
index 021fa27..ddb29bb 100644
--- a/include/linux/mtd/samsung_onenand.h
+++ b/include/linux/mtd/samsung_onenand.h
@@ -127,5 +127,7 @@
 
 /* common initialize function */
 extern void s3c_onenand_init(struct mtd_info *);
+extern int s5pc110_chip_probe(struct mtd_info *);
+extern int s5pc210_chip_probe(struct mtd_info *);
 
 #endif