mtd: rawnand: Move nand_exec_op() to internal.h

nand_exec_op() is only used by core code (nand_xxx.c files). Let's
move this inline function in drivers/mtd/nand/raw/internals.h.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2 files changed