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/vl-android.c b/vl-android.c
index 0129935..4258a49 100644
--- a/vl-android.c
+++ b/vl-android.c
@@ -41,7 +41,7 @@
 #include "console.h"
 #include "sysemu.h"
 #include "gdbstub.h"
-#include "qemu-timer.h"
+#include "qemu/timer.h"
 #include "qemu-char.h"
 #include "blockdev.h"
 #include "audio/audio.h"
@@ -192,7 +192,7 @@
 #include "console.h"
 #include "sysemu.h"
 #include "gdbstub.h"
-#include "qemu-timer.h"
+#include "qemu/timer.h"
 #include "qemu-char.h"
 #include "cache-utils.h"
 #include "block.h"