net: dsa: mt7530: remove now incorrect comment regarding port 5

Remove now incorrect comment regarding port 5 as GMAC5. This is supposed to
be supported since commit 38f790a ("net: dsa: mt7530: Add support for
port 5") under mt7530_setup_port5().

Fixes: 38f790a ("net: dsa: mt7530: Add support for port 5")
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Link: https://lore.kernel.org/r/20230310073338.5836-1-arinc.unal@arinc9.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/dsa/mt7530.c

@@ -2201,7 +2201,7 @@ mt7530_setup(struct dsa_switch *ds)
 
 	mt7530_pll_setup(priv);
 
-	/* Enable Port 6 only; P5 as GMAC5 which currently is not supported */
+	/* Enable port 6 */
 	val = mt7530_read(priv, MT7530_MHWTRAP);
 	val &= ~MHWTRAP_P6_DIS & ~MHWTRAP_PHY_ACCESS;
 	val |= MHWTRAP_MANUAL;