usb_cdcacm: Reset transmitting flag in usbReset().

Thanks to Manuel Odenahl for the fix.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
Preserve previous usb state when suspending / restore on resume

Signed-off-by: Manuel Odendahl <wesen@ruinwesen.com>
Merge remote-tracking branch 'wesen/bug/usb-resume'
libmaple/usb/stm32f1/usb.c: fix build error.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
Merge branch 'HEAD' of git://github.com/leaflabs/libmaple.git
usb_midi_device: Reset transmitting flag in usbReset()