block: rename block/aio.h to qemu/aio.h

AioContexts are used as a generic event loop even outside the block
layer; move the header file out of block/ just like the implementation
is in util/.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

include/system/event-loop-base.h

@@ -13,7 +13,7 @@
 #define QEMU_EVENT_LOOP_BASE_H
 
 #include "qom/object.h"
-#include "block/aio.h"
+#include "qemu/aio.h"
 
 #define TYPE_EVENT_LOOP_BASE         "event-loop-base"
 OBJECT_DECLARE_TYPE(EventLoopBase, EventLoopBaseClass,

include/system/iothread.h

@@ -14,7 +14,7 @@
 #ifndef IOTHREAD_H
 #define IOTHREAD_H
 
-#include "block/aio.h"
+#include "qemu/aio.h"
 #include "qemu/thread.h"
 #include "qom/object.h"
 #include "system/event-loop-base.h"

include/system/replay.h

@@ -15,7 +15,7 @@
 #include "qapi/qapi-types-misc.h"
 #include "qapi/qapi-types-run-state.h"
 #include "qapi/qapi-types-ui.h"
-#include "block/aio.h"
+#include "qemu/aio.h"
 #include "qemu/audio.h"
 
 /* replay clock kinds */