net: dsa: b53: unexport and move b53_eee_enable_set()

After commit f86ad77f ("net: dsa: bcm_sf2: Utilize b53_{enable,
disable}_port"), bcm_sf2.c no longer calls b53_eee_enable_set(), and all
its callers are in b53_common.c.

We also need to move it, because it is called within b53_common.c before
its definition, and we want to avoid forward declarations.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Acked-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20240206112527.4132299-1-vladimir.oltean@nxp.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/dsa/b53/b53_common.c

@@ -559,6 +559,19 @@ static void b53_port_set_learning(struct b53_device *dev, int port,
 	b53_write16(dev, B53_CTRL_PAGE, B53_DIS_LEARNING, reg);
 }
 
+static void b53_eee_enable_set(struct dsa_switch *ds, int port, bool enable)
+{
+	struct b53_device *dev = ds->priv;
+	u16 reg;
+
+	b53_read16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, &reg);
+	if (enable)
+		reg |= BIT(port);
+	else
+		reg &= ~BIT(port);
+	b53_write16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, reg);
+}
+
 int b53_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy)
 {
 	struct b53_device *dev = ds->priv;
@@ -2193,21 +2206,6 @@ void b53_mirror_del(struct dsa_switch *ds, int port,
 }
 EXPORT_SYMBOL(b53_mirror_del);
 
-void b53_eee_enable_set(struct dsa_switch *ds, int port, bool enable)
-{
-	struct b53_device *dev = ds->priv;
-	u16 reg;
-
-	b53_read16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, &reg);
-	if (enable)
-		reg |= BIT(port);
-	else
-		reg &= ~BIT(port);
-	b53_write16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, reg);
-}
-EXPORT_SYMBOL(b53_eee_enable_set);
-
-
 /* Returns 0 if EEE was not enabled, or 1 otherwise
  */
 int b53_eee_init(struct dsa_switch *ds, int port, struct phy_device *phy)

drivers/net/dsa/b53/b53_priv.h

@@ -395,7 +395,6 @@ void b53_mirror_del(struct dsa_switch *ds, int port,
 int b53_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy);
 void b53_disable_port(struct dsa_switch *ds, int port);
 void b53_brcm_hdr_setup(struct dsa_switch *ds, int port);
-void b53_eee_enable_set(struct dsa_switch *ds, int port, bool enable);
 int b53_eee_init(struct dsa_switch *ds, int port, struct phy_device *phy);
 int b53_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_keee *e);
 int b53_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_keee *e);