target/arm/kvm-stub: add missing stubs

Those become needed once kvm_enabled can't be known at compile time.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-id: 20250512180502.2395029-38-pierrick.bouvier@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

target/arm/kvm-stub.c

@@ -109,3 +109,13 @@ void arm_cpu_kvm_set_irq(void *arm_cpu, int irq, int level)
 {
     g_assert_not_reached();
 }
+
+void kvm_arm_cpu_pre_save(ARMCPU *cpu)
+{
+    g_assert_not_reached();
+}
+
+bool kvm_arm_cpu_post_load(ARMCPU *cpu)
+{
+    g_assert_not_reached();
+}