hw/hw.h: Add include of qemu-log.h

Add an include of qemu-log.h to hw.h, so that device model
code has access to these logging functions without the need
to directly include qemu-log.h.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

hw/hw.h

diff --git a/hw/hw.h b/hw/hw.h
index 16101de..b337ee3 100644
--- a/hw/hw.h
+++ b/hw/hw.h
@@ -12,6 +12,7 @@
 #include "irq.h"
 #include "qemu-file.h"
 #include "vmstate.h"
+#include "qemu-log.h"
 
 #ifdef NEED_CPU_H
 #if TARGET_LONG_BITS == 64