aio / timers: Add qemu_clock_get_ms and qemu_clock_get_ms

Add utility functions qemu_clock_get_ms and qemu_clock_get_us
Signed-off-by: NAlex Bligh <alex@alex.org.uk>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

include/qemu/timer.h

@@ -117,6 +117,34 @@ static inline int64_t qemu_clock_get_ns(QEMUClockType type)
     return qemu_get_clock_ns(qemu_clock_ptr(type));
 }
 
+/**
+ * qemu_clock_get_ms;
+ * @type: the clock type
+ *
+ * Get the millisecond value of a clock with
+ * type @type
+ *
+ * Returns: the clock value in milliseconds
+ */
+static inline int64_t qemu_clock_get_ms(QEMUClockType type)
+{
+    return qemu_clock_get_ns(type) / SCALE_MS;
+}
+
+/**
+ * qemu_clock_get_us;
+ * @type: the clock type
+ *
+ * Get the microsecond value of a clock with
+ * type @type
+ *
+ * Returns: the clock value in microseconds
+ */
+static inline int64_t qemu_clock_get_us(QEMUClockType type)
+{
+    return qemu_clock_get_ns(type) / SCALE_US;
+}
+
 /**
  * qemu_clock_has_timers:
  * @clock: the clock to operate on