hw/core: Move cpu.c, cpu.h from qom/ to hw/core/

Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190709152053.16670-2-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[Rebased onto merge commit 95a9457fd44; missed instances of qom/cpu.h
in comments replaced]
diff --git a/hw/core/numa.c b/hw/core/numa.c
index 7a63ddc..4f7e462 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -34,7 +34,7 @@
 #include "qapi/opts-visitor.h"
 #include "qapi/qapi-visit-machine.h"
 #include "sysemu/qtest.h"
-#include "qom/cpu.h"
+#include "hw/core/cpu.h"
 #include "hw/mem/pc-dimm.h"
 #include "migration/vmstate.h"
 #include "hw/boards.h"