usb: gadget: libcomposite: add epautoconf.c to libcomposite

This patch adds epautoconf.c into libcomposite and updates all gadgets.

Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/gadget/ether.c

@@ -103,7 +103,6 @@ static inline bool has_rndis(void)
  * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
  */
 #include "composite.c"
-#include "epautoconf.c"
 
 #include "f_ecm.c"
 #include "f_subset.c"