libpayload: Fix some missing-prototype warnings

usb_controller_initialize() is not declared in any header file nor
called from outside of usbinit.c, so make it static.

set_configuration() looks like beeing non-static on purpose (like the
other helpers around it in usb.c), so put a prototype into usb.h.

Change-Id: I08d93b3769d8398bb43462d9afdfeec81fef93ec
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1894
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

0 files changed, 0 insertions, 0 deletions