Fix usb drivers.

mcu/usb-usbip.c

@@ -47,7 +47,7 @@
 #include <poll.h>
 
 #include <usb_lld.h>
-#include <usb_lld_common.h>
+#include <usb_lld_driver.h>
 
 #include <alloca.h>
 
@@ -200,15 +200,12 @@ static struct usb_controller usbc;
 static void
 notify_device (uint8_t intr, uint8_t ep_num, uint8_t dir)
 {
-  extern sigset_t ss_cur;
-
   pthread_mutex_lock (&usbc.mutex);
   if (usbc.intr)
     pthread_cond_wait (&usbc.cond, &usbc.mutex);
   usbc.intr = intr;
   usbc.dir = (dir == USBIP_DIR_IN);
   usbc.ep_num = ep_num;
-  fprintf (stderr, "sigmask: %08llx\n", *(long long *)&ss_cur);
   pthread_kill (tid_main, SIGUSR1);
   pthread_mutex_unlock (&usbc.mutex);
 }