ARM: am3517_evm: Enable DM_SPI and DM_USB

To comply with pending requirements, this sets the flags to
enable DM_SPI and DM_USB.

Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/configs/am3517_evm_defconfig b/configs/am3517_evm_defconfig
index 67eb512..7a74e9e 100644
--- a/configs/am3517_evm_defconfig
+++ b/configs/am3517_evm_defconfig
@@ -49,7 +49,11 @@
 # CONFIG_TWL4030_POWER is not set
 CONFIG_CONS_INDEX=3
 CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_OMAP3_SPI=y
 CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_MUSB_HOST=y
 CONFIG_USB_MUSB_AM35X=y
 CONFIG_BCH=y