[PATCH 16/16] spi: falcon: mark falcon_sflash_xfer() as static

[Shiji Yang <yangshiji66@outlook.com>]

Fix the following missing-prototypes build warning:

drivers/spi/spi-falcon.c:97:5: error: no previous prototype for 'falcon_sflash_xfer' [-Werror=missing-prototypes]
   97 | int falcon_sflash_xfer(struct spi_device *spi, struct spi_transfer *t,
      |     ^~~~~~~~~~~~~~~~~~

Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
---
 drivers/spi/spi-falcon.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-falcon.c b/drivers/spi/spi-falcon.c
index 84279058f..faa893f83 100644
--- a/drivers/spi/spi-falcon.c
+++ b/drivers/spi/spi-falcon.c
@@ -94,8 +94,9 @@ struct falcon_sflash {
 	struct spi_controller *host;
 };
 
-int falcon_sflash_xfer(struct spi_device *spi, struct spi_transfer *t,
-		unsigned long flags)
+static int
+falcon_sflash_xfer(struct spi_device *spi, struct spi_transfer *t,
+		   unsigned long flags)
 {
 	struct device *dev = &spi->dev;
 	struct falcon_sflash *priv = spi_controller_get_devdata(spi->controller);
-- 
2.50.0