Add tracing to xenfb.

Signed-off-by: Don Koch <dkoch@verizon.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/trace-events b/trace-events
index 57f357f..ce1bf60 100644
--- a/trace-events
+++ b/trace-events
@@ -203,6 +203,10 @@
 jazz_led_read(uint64_t addr, uint8_t val) "read addr=0x%"PRIx64": 0x%x"
 jazz_led_write(uint64_t addr, uint8_t new) "write addr=0x%"PRIx64": 0x%x"
 
+# hw/display/xenfb.c
+xenfb_mouse_event(void *opaque, int dx, int dy, int dz, int button_state, int abs_pointer_wanted) "%p x %d y %d z %d bs %#x abs %d"
+xenfb_input_connected(void *xendev, int abs_pointer_wanted) "%p abs %d"
+
 # hw/net/lance.c
 lance_mem_readw(uint64_t addr, uint32_t ret) "addr=%"PRIx64"val=0x%04x"
 lance_mem_writew(uint64_t addr, uint32_t val) "addr=%"PRIx64"val=0x%04x"