usb: Begun implementing support for Binary Object Stores and their capability descriptors

lib/stm32/f1/Makefile

@@ -56,7 +56,7 @@ OBJS += mac.o mac_stm32fxx7.o
 OBJS += phy.o phy_ksz80x1.o
 
 OBJS += usb.o usb_control.o usb_standard.o usb_msc.o
-OBJS += usb_hid.o
+OBJS += usb_hid.o usb_bos.o
 OBJS += usb_audio.o usb_cdc.o usb_midi.o
 OBJS += usb_dwc_common.o usb_f107.o
 OBJS += st_usbfs_core.o st_usbfs_v1.o

lib/usb/usb_bos.c

@@ -0,0 +1,20 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopencm3/usb/bos.h>
+
+/* This stub exists just to trick doxygen. */