mtd: nand: Move Toshiba specific init/detection logic in nand_toshiba.c

Move Toshiba specific initialization and detection logic into
nand_toshiba.c. This is part of the "separate vendor specific code from
core" cleanup process.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Richard Weinberger <richard@nod.at>
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 74e3a23..dd9e3b5 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -1114,6 +1114,7 @@
 
 extern struct nand_flash_dev nand_flash_ids[];
 
+extern const struct nand_manufacturer_ops toshiba_nand_manuf_ops;
 extern const struct nand_manufacturer_ops samsung_nand_manuf_ops;
 extern const struct nand_manufacturer_ops hynix_nand_manuf_ops;