net: miiphybb: Wrap driver side bb_miiphy_read/write() accessors

Do not call bb_miiphy_read()/bb_miiphy_write() accessors directly
in drivers, instead call them through wrapper functions. Those are
meant to be used as function parameter adaptation layer between
struct mii_dev callback function parameters and what the miiphybb
does expect and will soon expect. This is a preparatory patch, no
functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Paul Barker <paul.barker.ct@bp.renesas.com>
diff --git a/drivers/net/sh_eth.c b/drivers/net/sh_eth.c
index 0693c24..cef531c 100644
--- a/drivers/net/sh_eth.c
+++ b/drivers/net/sh_eth.c
@@ -720,6 +720,18 @@
 	.delay		= sh_eth_bb_delay,
 };
 
+static int sh_eth_bb_miiphy_read(struct mii_dev *miidev, int addr,
+				 int devad, int reg)
+{
+	return bb_miiphy_read(miidev, addr, devad, reg);
+}
+
+static int sh_eth_bb_miiphy_write(struct mii_dev *miidev, int addr,
+				  int devad, int reg, u16 value)
+{
+	return bb_miiphy_write(miidev, addr, devad, reg, value);
+}
+
 static int sh_ether_probe(struct udevice *udev)
 {
 	struct eth_pdata *pdata = dev_get_plat(udev);
@@ -744,8 +756,8 @@
 
 	mdiodev = &bb_miiphy->mii;
 
-	mdiodev->read = bb_miiphy_read;
-	mdiodev->write = bb_miiphy_write;
+	mdiodev->read = sh_eth_bb_miiphy_read;
+	mdiodev->write = sh_eth_bb_miiphy_write;
 	snprintf(mdiodev->name, sizeof(mdiodev->name), udev->name);
 
 	/* Copy the bus accessors and private data */