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/work_92105_defconfig b/configs/work_92105_defconfig
index ba2474c..8e7f6c8 100644
--- a/configs/work_92105_defconfig
+++ b/configs/work_92105_defconfig
@@ -31,5 +31,6 @@
 CONFIG_SPL_DM=y
 CONFIG_DM_GPIO=y
 # CONFIG_MMC is not set
+CONFIG_PHYLIB=y
 CONFIG_DM_SERIAL=y
 CONFIG_SYS_NS16550=y