hw: add missing includes hidden by block/aio.h

hw/qdev/core.h being included by core headers means that it was quite
easy to forget including it, or anything that hw/qdev/core.h included.
Add the missing inclusions.

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

hw/virtio/iothread-vq-mapping.c

@@ -8,6 +8,7 @@
 
 #include "qemu/osdep.h"
 #include "system/iothread.h"
+#include "qemu/bitmap.h"
 #include "hw/virtio/iothread-vq-mapping.h"
 
 static bool

include/hw/char/serial.h

@@ -26,6 +26,7 @@
 #ifndef HW_SERIAL_H
 #define HW_SERIAL_H
 
+#include "hw/core/qdev.h"
 #include "chardev/char-fe.h"
 #include "system/memory.h"
 #include "qemu/fifo8.h"