[RFC PATCH] mtd: rawnand: nand_power_down_op() can be static

[kbuild test robot]

Fixes: 9dfaf23e330d ("mtd: rawnand: Add support Macronix deep power down mode")
Signed-off-by: kbuild test robot <lkp@xxxxxxxxx>
---
 nand_macronix.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/nand_macronix.c b/drivers/mtd/nand/raw/nand_macronix.c
index 3098bc09c25c7..adf81482937bc 100644
--- a/drivers/mtd/nand/raw/nand_macronix.c
+++ b/drivers/mtd/nand/raw/nand_macronix.c
@@ -139,7 +139,7 @@ static int mxic_nand_unlock(struct nand_chip *chip, loff_t ofs, uint64_t len)
 	return ret;
 }
 
-int nand_power_down_op(struct nand_chip *chip)
+static int nand_power_down_op(struct nand_chip *chip)
 {
 	int ret;