aarch64: Fix IRQ number setting for ACPI

On FDT, VMM can allocate IRQ from 0 for devices.
But on ACPI, the lowest range below 32 has to be avoided.

Signed-off-by: Michael Zhao <michael.zhao@arm.com>

vmm/src/interrupt.rs

@@ -456,7 +456,7 @@ mod tests {
         let res = get_dist_regs(gic.device());
         assert!(res.is_ok());
         let state = res.unwrap();
-        assert_eq!(state.len(), 649);
+        assert_eq!(state.len(), 568);
 
         let res = set_dist_regs(gic.device(), &state);
         assert!(res.is_ok());

vmm/src/vm.rs

@@ -2425,20 +2425,23 @@ mod tests {
         let dev_info: HashMap<(DeviceType, std::string::String), MmioDeviceInfo> = [
             (
                 (DeviceType::Serial, DeviceType::Serial.to_string()),
-                MmioDeviceInfo { addr: 0x00, irq: 1 },
+                MmioDeviceInfo {
+                    addr: 0x00,
+                    irq: 33,
+                },
             ),
             (
                 (DeviceType::Virtio(1), "virtio".to_string()),
                 MmioDeviceInfo {
                     addr: 0x00 + LEN,
-                    irq: 2,
+                    irq: 34,
                 },
             ),
             (
                 (DeviceType::Rtc, "rtc".to_string()),
                 MmioDeviceInfo {
                     addr: 0x00 + 2 * LEN,
-                    irq: 3,
+                    irq: 35,
                 },
             ),
         ]