hw/adc/zynq-xadc: Use qemu_irq typedef

Except hw/core/irq.c which implements the forward-declared opaque
qemu_irq structure, hw/adc/zynq-xadc.{c,h} are the only files not
using the typedef. Fix this single exception.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Bernhard Beschow <shentey@gmail.com>
Message-id: 20220509202035.50335-1-philippe.mathieu.daude@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/adc/zynq-xadc.c

@@ -86,7 +86,7 @@ static void zynq_xadc_update_ints(ZynqXADCState *s)
         s->regs[INT_STS] |= INT_DFIFO_GTH;
     }
 
-    qemu_set_irq(s->qemu_irq, !!(s->regs[INT_STS] & ~s->regs[INT_MASK]));
+    qemu_set_irq(s->irq, !!(s->regs[INT_STS] & ~s->regs[INT_MASK]));
 }
 
 static void zynq_xadc_reset(DeviceState *d)
@@ -262,7 +262,7 @@ static void zynq_xadc_init(Object *obj)
     memory_region_init_io(&s->iomem, obj, &xadc_ops, s, "zynq-xadc",
                           ZYNQ_XADC_MMIO_SIZE);
     sysbus_init_mmio(sbd, &s->iomem);
-    sysbus_init_irq(sbd, &s->qemu_irq);
+    sysbus_init_irq(sbd, &s->irq);
 }
 
 static const VMStateDescription vmstate_zynq_xadc = {

include/hw/adc/zynq-xadc.h

@@ -39,8 +39,7 @@ struct ZynqXADCState {
     uint16_t xadc_dfifo[ZYNQ_XADC_FIFO_DEPTH];
     uint16_t xadc_dfifo_entries;
 
-    struct IRQState *qemu_irq;
-
+    qemu_irq irq;
 };
 
 #endif /* ZYNQ_XADC_H */