Add arm,gic-400 support to GIC driver

src/arch/aarch64/device/irqchip/gic.rs

@@ -43,7 +43,10 @@ impl GenericInterruptController {
         }
     }
     pub fn parse(fdt: &Fdt) -> Result<(usize, usize, usize, usize)> {
-        if let Some(node) = fdt.find_compatible(&["arm,cortex-a15-gic"]) {
+        if let Some(node) = fdt.find_compatible(&[
+            "arm,cortex-a15-gic",
+            "arm,gic-400",
+        ]) {
             return GenericInterruptController::parse_inner(&node);
         } else {
             return Err(Error::new(EINVAL));

src/arch/aarch64/device/irqchip/mod.rs

@@ -10,7 +10,7 @@ mod irq_bcm2836;
 pub(crate) fn new_irqchip(ic_str: &str) -> Option<Box<dyn InterruptController>> {
     if ic_str.contains("arm,gic-v3") {
         Some(Box::new(gicv3::GicV3::new()))
-    } else if ic_str.contains("arm,cortex-a15-gic") {
+    } else if ic_str.contains("arm,cortex-a15-gic") || ic_str.contains("arm,gic-400") {
         Some(Box::new(gic::GenericInterruptController::new()))
     } else if ic_str.contains("brcm,bcm2836-l1-intc") {
         Some(Box::new(irq_bcm2836::Bcm2836ArmInterruptController::new()))