mtd: nand: davinci: add header file for driver definitions

The definitions inside emif_defs.h concern davinci nand driver and
should be in it's header. So create header file for davinci nand
driver and move definitions from emif_defs.h and nand_defs.h to it.

Acked-by: Vitaly Andrianov <vitalya@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
[trini: Fixup more davinci breakage]
Signed-off-by: Tom Rini <trini@ti.com>
diff --git a/board/davinci/sonata/sonata.c b/board/davinci/sonata/sonata.c
index aa04041..f5c3258 100644
--- a/board/davinci/sonata/sonata.c
+++ b/board/davinci/sonata/sonata.c
@@ -14,7 +14,7 @@
 
 #include <common.h>
 #include <nand.h>
-#include <asm/arch/nand_defs.h>
+#include <asm/ti-common/davinci_nand.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/davinci_misc.h>