qemu-common: push cpu.h inclusion out of qemu-common.h

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/gdbstub.c b/gdbstub.c
index 0e431fd..c19ce39 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -19,7 +19,7 @@
 #include "qemu/osdep.h"
 #include "qapi/error.h"
 #include "qemu/cutils.h"
-
+#include "cpu.h"
 #ifdef CONFIG_USER_ONLY
 #include "qemu.h"
 #else