libusbemu/libusb.h: include <sys/time.h>

MinGW also needs struct timeval.

Signed-off-by: Drew Fisher <drew.m.fisher@gmail.com>

Author: zarvox

platform/windows/libusb10emu/libusb-1.0/libusb.h

@@ -42,7 +42,8 @@
   // We need struct timeval.
   #include <winsock.h>
 #else
-#include <stdint.h>
+  #include <stdint.h>
+  #include <sys/time.h>
 #endif
 
 #define LIBUSBEMU 1