mtd: rawnand: fsmc: Use nand_op_trace for operation tracing

Replace the different operation tracing functions with a call to
nand_op_trace.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>