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/udoo_neo_defconfig b/configs/udoo_neo_defconfig
index ecc03fc..e6ee4ae 100644
--- a/configs/udoo_neo_defconfig
+++ b/configs/udoo_neo_defconfig
@@ -23,4 +23,5 @@
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_TIME=y
 CONFIG_CMD_EXT4_WRITE=y
+CONFIG_PHYLIB=y
 CONFIG_OF_LIBFDT=y