net: phy: fixed: support speeds of 2500 and 10000

Unlike the Linux fixed PHY driver, the one in U-Boot does not attempt to
emulate the clause 22 register set of a gigabit copper PHY driver
through the swphy framework. Therefore, the limitation of being unable
to support speeds higher than gigabit in fixed-link does not apply to
the U-Boot fixed PHY driver. This makes the fixed-link U-Boot
implementation more similar to the one from phylink, which can work with
any valid link speed.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>
diff --git a/drivers/net/phy/fixed.c b/drivers/net/phy/fixed.c
index 3228672..1a38c29 100644
--- a/drivers/net/phy/fixed.c
+++ b/drivers/net/phy/fixed.c
@@ -24,7 +24,8 @@
 	/* check for mandatory properties within fixed-link node */
 	val = fdt_getprop_u32_default_node(gd->fdt_blob,
 					   ofnode, 0, "speed", 0);
-	if (val != SPEED_10 && val != SPEED_100 && val != SPEED_1000) {
+	if (val != SPEED_10 && val != SPEED_100 && val != SPEED_1000 &&
+	    val != SPEED_2500 && val != SPEED_10000) {
 		printf("ERROR: no/invalid speed given in fixed-link node!");
 		return -EINVAL;
 	}