soong: Add TARGET_CAMERA_BOOTTIME_TIMESTAMP conditional

Change-Id: Iefdf247311f21222d4b6c794c1277d9993444804
diff --git a/build/soong/Android.bp b/build/soong/Android.bp
index 56f987e..f4d70f0 100644
--- a/build/soong/Android.bp
+++ b/build/soong/Android.bp
@@ -160,6 +160,23 @@
 }
 
 soong_config_module_type {
+    name: "needs_camera_boottime",
+    module_type: "cc_defaults",
+    config_namespace: "blissGlobalVars",
+    bool_variables: ["needs_camera_boottime"],
+    properties: ["cppflags"],
+}
+
+needs_camera_boottime {
+    name: "needs_camera_boottime_defaults",
+    soong_config_variables: {
+        needs_camera_boottime: {
+            cppflags: ["-DTARGET_CAMERA_BOOTTIME_TIMESTAMP"],
+        },
+    },
+}
+
+soong_config_module_type {
     name: "camera_needs_client_info",
     module_type: "cc_defaults",
     config_namespace: "blissGlobalVars",