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/k2e_hs_evm_defconfig b/configs/k2e_hs_evm_defconfig
index b8bd57c..477221c 100644
--- a/configs/k2e_hs_evm_defconfig
+++ b/configs/k2e_hs_evm_defconfig
@@ -27,6 +27,7 @@
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_STMICRO=y
+CONFIG_PHYLIB=y
 CONFIG_DM_ETH=y
 CONFIG_DM_SERIAL=y
 CONFIG_SYS_NS16550=y