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/sc_sps_1_defconfig b/configs/sc_sps_1_defconfig
index 4320421..44c5f51 100644
--- a/configs/sc_sps_1_defconfig
+++ b/configs/sc_sps_1_defconfig
@@ -24,6 +24,7 @@
 CONFIG_CMD_EXT2=y
 CONFIG_CMD_FAT=y
 CONFIG_MMC_MXS=y
+CONFIG_PHYLIB=y
 CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y