hw/i386/port92: Add missing 'hw/isa/isa.h' header

TYPE_PORT92 inherits TYPE_ISA_DEVICE, so need to include
"hw/isa/isa.h" to get its declarations (currently we
indirectly include this header via "hw/i386/pc.h").

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Luc Michel <luc.michel@amd.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

hw/i386/port92.c

@@ -10,6 +10,7 @@
 #include "sysemu/runstate.h"
 #include "migration/vmstate.h"
 #include "hw/irq.h"
+#include "hw/isa/isa.h"
 #include "hw/i386/pc.h"
 #include "trace.h"
 #include "qom/object.h"