hw/i386: Constify VMState

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Message-Id: <20231221031652.119827-32-richard.henderson@linaro.org>
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 80db183..edc9793 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2770,7 +2770,7 @@
     .name = "acpi_build",
     .version_id = 1,
     .minimum_version_id = 1,
-    .fields = (VMStateField[]) {
+    .fields = (const VMStateField[]) {
         VMSTATE_UINT8(patched, AcpiBuildState),
         VMSTATE_END_OF_LIST()
     },