Move PHY_MICREL and PHY_MICREL_KSZ90X1 to Kconfig

Signed-off-by: Alexandru Gagniuc <alex.g@adaptrum.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/configs/udoo_defconfig b/configs/udoo_defconfig
index 4858271..2092603 100644
--- a/configs/udoo_defconfig
+++ b/configs/udoo_defconfig
@@ -32,5 +32,7 @@
 CONFIG_CMD_FS_GENERIC=y
 CONFIG_DM=y
 CONFIG_PHYLIB=y
+CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ90X1=y
 CONFIG_DM_THERMAL=y
 CONFIG_OF_LIBFDT=y