ppc: convert g_new(qemu_irq usages to g_new0

To indicate the IRQs are initially disconnected.
Signed-off-by: NPeter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>

hw/intc/openpic.c

@@ -1627,7 +1627,7 @@ static void openpic_realize(DeviceState *dev, Error **errp)
     }
 
     for (i = 0; i < opp->nb_cpus; i++) {
-        opp->dst[i].irqs = g_new(qemu_irq, OPENPIC_OUTPUT_NB);
+        opp->dst[i].irqs = g_new0(qemu_irq, OPENPIC_OUTPUT_NB);
         for (j = 0; j < OPENPIC_OUTPUT_NB; j++) {
             sysbus_init_irq(d, &opp->dst[i].irqs[j]);
         }

hw/ppc/e500.c

@@ -583,7 +583,7 @@ static qemu_irq *ppce500_init_mpic(PPCE500Params *params, MemoryRegion *ccsr,
     SysBusDevice *s;
     int i;
 
-    mpic = g_new(qemu_irq, 256);
+    mpic = g_new0(qemu_irq, 256);
 
     if (kvm_enabled()) {
         QemuOpts *machine_opts = qemu_get_machine_opts();

hw/ppc/mac_newworld.c

@@ -346,7 +346,7 @@ static void ppc_core99_init(MachineState *machine)
         }
     }
 
-    pic = g_new(qemu_irq, 64);
+    pic = g_new0(qemu_irq, 64);
 
     dev = qdev_create(NULL, TYPE_OPENPIC);
     qdev_prop_set_uint32(dev, "model", OPENPIC_MODEL_RAVEN);