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/tbs2910_defconfig b/configs/tbs2910_defconfig
index 15531e4..a6783e0 100644
--- a/configs/tbs2910_defconfig
+++ b/configs/tbs2910_defconfig
@@ -36,6 +36,7 @@
 CONFIG_CMD_FS_GENERIC=y
 CONFIG_EFI_PARTITION=y
 CONFIG_DM=y
+CONFIG_PHYLIB=y
 CONFIG_PCI=y
 CONFIG_DM_THERMAL=y
 CONFIG_USB=y