drivers: ethernet: phy: add PHY_LINK_IS_SPEED_10M macro

add PHY_LINK_IS_SPEED_10M macro to check if the link speed is 10M.

Signed-off-by: Fin Maaß <[email protected]>

Author: maass-hamburg

include/zephyr/net/phy.h

@@ -88,6 +88,16 @@ enum phy_link_speed {
 #define PHY_LINK_IS_SPEED_100M(x)                                                                  \
 	(x & (LINK_HALF_100BASE_T | LINK_FULL_100BASE_T | LINK_FULL_100BASE_X))
 
+/**
+ * @brief Check if phy link speed is 10 Mbit/sec.
+ *
+ * @param x Link capabilities
+ *
+ * @return True if link is 10 Mbit/sec, false if not.
+ */
+#define PHY_LINK_IS_SPEED_10M(x)                                                                   \
+	(x & (LINK_HALF_10BASE_T | LINK_FULL_10BASE_T | LINK_FULL_10BASE_X))
+
 /** @brief Link state */
 struct phy_link_state {
 	/** Link speed */