Camera: Mark color temp flag as exported

Test: m
Flag: com.android.internal.camera.flags.color_temperature
Bug: 359409044
Change-Id: I69c6a0fde6e901254f0a0183bdb70b28bab7904b
diff --git a/camera/camera_platform.aconfig b/camera/camera_platform.aconfig
index 323b23a..2d0a364 100644
--- a/camera/camera_platform.aconfig
+++ b/camera/camera_platform.aconfig
@@ -197,6 +197,7 @@
 
 flag {
     namespace: "camera_platform"
+    is_exported: true
     name: "color_temperature"
     description: "Add keys to manually set color temperature and color tint"
     bug: "359409044"