ARM: kirkwood: enable CONFIG_DM_USB for {dream, guru, sheeva}plug

Enable CONFIG_DM_USB and where possible CONFIG_BLK.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Leigh Brown <leigh@solinno.co.uk>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/configs/sheevaplug_defconfig b/configs/sheevaplug_defconfig
index 04b00cd..ec527fc 100644
--- a/configs/sheevaplug_defconfig
+++ b/configs/sheevaplug_defconfig
@@ -39,6 +39,7 @@
 CONFIG_RTC_MV=y
 CONFIG_SYS_NS16550=y
 CONFIG_USB=y
+CONFIG_DM_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y
 CONFIG_LZMA=y