[bsp] fix enum warnings

bsp/imxrt1052-evk/drivers/drv_eth.c

@@ -572,9 +572,10 @@ static void phy_monitor_thread_entry(void *parameter)
             
             if (link)   // link up
             {
-                PHY_GetLinkSpeedDuplex(imxrt_eth_device.enet_base, PHY_ADDRESS, &speed, &duplex);
+                PHY_GetLinkSpeedDuplex(imxrt_eth_device.enet_base, 
+                                       PHY_ADDRESS, &speed, &duplex);
                 
-                if (kENET_MiiSpeed10M == speed)
+                if (kPHY_Speed10M == speed)
                 {
                     dbg_log(DBG_LOG, "10M\n");
                 }
@@ -583,7 +584,7 @@ static void phy_monitor_thread_entry(void *parameter)
                     dbg_log(DBG_LOG, "100M\n");
                 }
                 
-                if (kENET_MiiHalfDuplex == duplex)
+                if (kPHY_HalfDuplex == duplex)
                 {
                     dbg_log(DBG_LOG, "half dumplex\n");
                 }
@@ -592,7 +593,8 @@ static void phy_monitor_thread_entry(void *parameter)
                     dbg_log(DBG_LOG, "full dumplex\n");
                 }
                 
-                if ((imxrt_eth_device.speed != speed) || (imxrt_eth_device.duplex != duplex))
+                if ((imxrt_eth_device.speed != (enet_mii_speed_t)speed) 
+                    || (imxrt_eth_device.duplex != (enet_mii_duplex_t)duplex))
                 {
                     imxrt_eth_device.speed = (enet_mii_speed_t)speed; 
                     imxrt_eth_device.duplex = (enet_mii_duplex_t)duplex;