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/mx7dsabresd_secure_defconfig b/configs/mx7dsabresd_secure_defconfig
index c678e75..4e53cd8 100644
--- a/configs/mx7dsabresd_secure_defconfig
+++ b/configs/mx7dsabresd_secure_defconfig
@@ -50,6 +50,7 @@
 # CONFIG_DM_MMC_OPS is not set
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_EON=y
+CONFIG_PHYLIB=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_IMX7=y
 CONFIG_DM_PMIC=y