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/sbc8349_defconfig b/configs/sbc8349_defconfig
index 5dd1603..7795518 100644
--- a/configs/sbc8349_defconfig
+++ b/configs/sbc8349_defconfig
@@ -11,6 +11,7 @@
 CONFIG_CMD_PING=y
 # CONFIG_MMC is not set
 CONFIG_MTD_NOR_FLASH=y
+CONFIG_PHYLIB=y
 # CONFIG_PCI is not set
 CONFIG_SYS_NS16550=y
 CONFIG_OF_LIBFDT=y