ast10x0: Update interrupt tests to match upstream

Add `test_irq2` to the interrupts test to match pigweed upstream.

Signed-off-by: Chris Frantz <cfrantz@google.com>

target/ast10x0/tests/interrupts/user/system.json5

diff --git a/target/ast10x0/tests/interrupts/user/system.json5 b/target/ast10x0/tests/interrupts/user/system.json5
index 17047ef..b1d50a8 100644
--- a/target/ast10x0/tests/interrupts/user/system.json5
+++ b/target/ast10x0/tests/interrupts/user/system.json5
@@ -54,6 +54,11 @@
                     type: "u32",
                     value: 42
                 },
+                {
+                    name: "test_irq2",
+                    type: "u32",
+                    value: 43
+                },
             ],
         },
         {
@@ -72,6 +77,10 @@
                                     name: "test_irq",
                                     number: 42,
                                 },
+                                {
+                                    name: "test_irq2",
+                                    number: 43,
+                                },
                             ]
                         },
                         {