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/pepper_defconfig b/configs/pepper_defconfig
index b9ee513..e175d11 100644
--- a/configs/pepper_defconfig
+++ b/configs/pepper_defconfig
@@ -29,9 +29,9 @@
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_MMC_OMAP_HS=y
-CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
 CONFIG_PHY_MICREL_KSZ90X1=y
+CONFIG_DRIVER_TI_CPSW=y
 CONFIG_NETDEVICES=y
 CONFIG_SYS_NS16550=y
 CONFIG_OMAP3_SPI=y