mtd: nand: Move AMD/Spansion specific init/detection logic in nand_amd.c

Upstream linux commit 229204da53b31d.

Move AMD/Spansion specific initialization/detection logic into
nand_amd.c. This is part of the "separate vendor specific code from
core" cleanup process.

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index ec0f77b..bb1a359 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -1142,6 +1142,7 @@
 extern const struct nand_manufacturer_ops samsung_nand_manuf_ops;
 extern const struct nand_manufacturer_ops hynix_nand_manuf_ops;
 extern const struct nand_manufacturer_ops micron_nand_manuf_ops;
+extern const struct nand_manufacturer_ops amd_nand_manuf_ops;
 
 int nand_default_bbt(struct mtd_info *mtd);
 int nand_markbad_bbt(struct mtd_info *mtd, loff_t offs);