hw/arm/virt: Restrict Cortex-A7 check to TCG

The Cortex-A7 core is only available when TCG is enabled (see
commit 80485d8 "target/arm: Restrict v7A TCG cpus to TCG accel").

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230405100848.76145-3-philmd@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/arm/virt.c

@@ -204,7 +204,9 @@ static const int a15irqmap[] = {
 };
 
 static const char *valid_cpus[] = {
+#ifdef CONFIG_TCG
     ARM_CPU_TYPE_NAME("cortex-a7"),
+#endif
     ARM_CPU_TYPE_NAME("cortex-a15"),
     ARM_CPU_TYPE_NAME("cortex-a35"),
     ARM_CPU_TYPE_NAME("cortex-a53"),