Add libusb library name for detection on FreeBSD

cmake/FindLibUSB.cmake

@@ -10,7 +10,7 @@ if(PKG_CONFIG_FOUND)
 endif()
 
 find_library(LibUSB_LIBRARY
-  NAMES usb-1.0 libusb-1.0
+  NAMES usb-1.0 libusb-1.0 usb
   HINTS ${PC_LibUSB_LIBRARY_DIRS}
 )