Migrate CONFIG_DRIVER_TI_CPSW to Kconfig

This converts CONFIG_DRIVER_TI_CPSW to Kconfig

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/configs/am335x_evm_norboot_defconfig b/configs/am335x_evm_norboot_defconfig
index 22182f5..176c820 100644
--- a/configs/am335x_evm_norboot_defconfig
+++ b/configs/am335x_evm_norboot_defconfig
@@ -24,7 +24,7 @@
 CONFIG_MTD_NOR_FLASH=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_WINBOND=y
-CONFIG_PHYLIB=y
+CONFIG_DRIVER_TI_CPSW=y
 CONFIG_SYS_NS16550=y
 CONFIG_OMAP3_SPI=y
 CONFIG_USB=y