configs: am335x_evm: enable DM_USB_GADGET and USB_ETHER in u-boot and SPL

The AM335x ROM boot is able to download the SPL from a RNDIS connection
on USB0. To enable a full RNDIS boot flow (romboot -> SPL -> u-boot -> ..),
we can use USB_ETHER in SPL and u-boot.
However this increase the size of the SPL past its limit. So removing the
unused SPL_EXT_SUPPORT.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/am335x_evm_defconfig b/configs/am335x_evm_defconfig
index 21c5bdb..4b22c19 100644
--- a/configs/am335x_evm_defconfig
+++ b/configs/am335x_evm_defconfig
@@ -10,9 +10,14 @@
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
 CONFIG_VERSION_VARIABLE=y
 CONFIG_ARCH_MISC_INIT=y
+# CONFIG_SPL_EXT_SUPPORT is not set
 CONFIG_SPL_MTD_SUPPORT=y
 CONFIG_SPL_MUSB_NEW_SUPPORT=y
+CONFIG_SPL_NET_SUPPORT=y
+CONFIG_SPL_NET_VCI_STRING="AM33xx U-Boot SPL"
 CONFIG_SPL_OS_BOOT=y
+CONFIG_SPL_USB_GADGET=y
+CONFIG_SPL_USB_ETHER=y
 CONFIG_CMD_SPL=y
 CONFIG_CMD_SPL_NAND_OFS=0x00080000
 # CONFIG_CMD_FLASH is not set
@@ -51,7 +56,8 @@
 CONFIG_OMAP_TIMER=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
-# CONFIG_SPL_DM_USB is not set
+CONFIG_DM_USB_GADGET=y
+CONFIG_SPL_DM_USB_GADGET=y
 CONFIG_USB_MUSB_HOST=y
 CONFIG_USB_MUSB_GADGET=y
 CONFIG_USB_MUSB_TI=y