Move PHYLIB to Kconfig

Signed-off-by: Alexandru Gagniuc <alex.g@adaptrum.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/configs/P1020MBG-PC_36BIT_defconfig b/configs/P1020MBG-PC_36BIT_defconfig
index 93a9ed4..b048600 100644
--- a/configs/P1020MBG-PC_36BIT_defconfig
+++ b/configs/P1020MBG-PC_36BIT_defconfig
@@ -22,6 +22,7 @@
 CONFIG_CMD_EXT2=y
 CONFIG_CMD_FAT=y
 CONFIG_MTD_NOR_FLASH=y
+CONFIG_PHYLIB=y
 CONFIG_NETDEVICES=y
 CONFIG_E1000=y
 CONFIG_SYS_NS16550=y