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/am335x_shc_prompt_defconfig b/configs/am335x_shc_prompt_defconfig
index e5903de..a6c6c57 100644
--- a/configs/am335x_shc_prompt_defconfig
+++ b/configs/am335x_shc_prompt_defconfig
@@ -37,6 +37,7 @@
 CONFIG_ISO_PARTITION=y
 # CONFIG_SPL_ISO_PARTITION is not set
 CONFIG_MMC_OMAP_HS=y
+CONFIG_PHYLIB=y
 CONFIG_SYS_NS16550=y
 CONFIG_FAT_WRITE=y
 CONFIG_LZO=y