Move qemu-timer.h to include/qemu/timer.h

Note: upstream still puts qemu-timer.c in the top-level
directory, so no need to move it

Change-Id: I475309d6f0040b4fd2277e52a2526825c112e91f
diff --git a/telephony/sysdeps_qemu.c b/telephony/sysdeps_qemu.c
index 6aa5038..f180de8 100644
--- a/telephony/sysdeps_qemu.c
+++ b/telephony/sysdeps_qemu.c
@@ -12,7 +12,7 @@
 #include "sockets.h"
 #include "sysdeps.h"
 #include "qemu-common.h"
-#include "qemu-timer.h"
+#include "qemu/timer.h"
 #include "qemu-char.h"
 #ifdef _WIN32
 #include <winsock2.h>