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/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index ddb2670..7c05982 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -63,3 +63,4 @@
 nand-objs := nand_base.o nand_bbt.o nand_timings.o nand_ids.o
 nand-objs += nand_hynix.o
 nand-objs += nand_samsung.o
+nand-objs += nand_toshiba.o