hw: explicitly include qemu/log.h

Move the inclusion out of hw/hw.h, most files do not need it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/hw/misc/mips_cmgcr.c b/hw/misc/mips_cmgcr.c
index 37be239..40f3464 100644
--- a/hw/misc/mips_cmgcr.c
+++ b/hw/misc/mips_cmgcr.c
@@ -11,6 +11,7 @@
 
 #include "qemu/osdep.h"
 #include "qapi/error.h"
+#include "qemu/log.h"
 #include "hw/hw.h"
 #include "hw/sysbus.h"
 #include "sysemu/sysemu.h"