isa: move ISABus structure definition to header file

Signed-off-by: NHervé Poussineau <hpoussin@reactos.org>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/isa-bus.c

@@ -22,11 +22,6 @@
 #include "isa.h"
 #include "exec-memory.h"
 
-struct ISABus {
-    BusState qbus;
-    MemoryRegion *address_space_io;
-    qemu_irq *irqs;
-};
 static ISABus *isabus;
 target_phys_addr_t isa_mem_base = 0;
 

hw/isa.h

@@ -12,6 +12,12 @@
 typedef struct ISADevice ISADevice;
 typedef struct ISADeviceInfo ISADeviceInfo;
 
+struct ISABus {
+    BusState qbus;
+    MemoryRegion *address_space_io;
+    qemu_irq *irqs;
+};
+
 struct ISADevice {
     DeviceState qdev;
     uint32_t isairq[2];