davinci_emac: conditionally compile specific PHY support

Signed-off-by: Ilya Yanok <yanok@emcraft.com>
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index 2ac6874..4f9ed2f 100644
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -803,6 +803,7 @@
 		phy_id |= tmp & 0x0000ffff;
 
 		switch (phy_id) {
+#ifdef PHY_KSZ8873
 		case PHY_KSZ8873:
 			sprintf(phy[i].name, "KSZ8873 @ 0x%02x",
 						active_phy_addr[i]);
@@ -811,6 +812,8 @@
 			phy[i].get_link_speed = ksz8873_get_link_speed;
 			phy[i].auto_negotiate = ksz8873_auto_negotiate;
 			break;
+#endif
+#ifdef PHY_LXT972
 		case PHY_LXT972:
 			sprintf(phy[i].name, "LXT972 @ 0x%02x",
 						active_phy_addr[i]);
@@ -819,6 +822,8 @@
 			phy[i].get_link_speed = lxt972_get_link_speed;
 			phy[i].auto_negotiate = lxt972_auto_negotiate;
 			break;
+#endif
+#ifdef PHY_DP83848
 		case PHY_DP83848:
 			sprintf(phy[i].name, "DP83848 @ 0x%02x",
 						active_phy_addr[i]);
@@ -827,6 +832,8 @@
 			phy[i].get_link_speed = dp83848_get_link_speed;
 			phy[i].auto_negotiate = dp83848_auto_negotiate;
 			break;
+#endif
+#ifdef PHY_ET1011C
 		case PHY_ET1011C:
 			sprintf(phy[i].name, "ET1011C @ 0x%02x",
 						active_phy_addr[i]);
@@ -835,6 +842,7 @@
 			phy[i].get_link_speed = et1011c_get_link_speed;
 			phy[i].auto_negotiate = gen_auto_negotiate;
 			break;
+#endif
 		default:
 			sprintf(phy[i].name, "GENERIC @ 0x%02x",
 						active_phy_addr[i]);