Replace Qemu by QEMU in comments

The official spelling is QEMU.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Andreas Färber <afaerber@suse.de>
[blauwirbel@gmail.com: fixed comment style in hw/sun4m.c]
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/qemu-queue.h b/qemu-queue.h
index 74d7122..9288cd8 100644
--- a/qemu-queue.h
+++ b/qemu-queue.h
@@ -1,7 +1,7 @@
 /*      $NetBSD: queue.h,v 1.52 2009/04/20 09:56:08 mschuett Exp $ */
 
 /*
- * Qemu version: Copy from netbsd, removed debug code, removed some of
+ * QEMU version: Copy from netbsd, removed debug code, removed some of
  * the implementations.  Left in singly-linked lists, lists, simple
  * queues, and tail queues.
  */