configstore: add startGraphicsAllocatorService

Add ISurfaceFlingerConfigs::startGraphicsAllocatorService to control
whether SurfaceFlinger should start IAllocator service.

Bug: 36462585
Test: boots
Change-Id: I421413673246cc7c552bc9eeeb7a9ce2783faf9e
diff --git a/configstore/1.0/ISurfaceFlingerConfigs.hal b/configstore/1.0/ISurfaceFlingerConfigs.hal
index dcc9bbb..5f975bd 100644
--- a/configstore/1.0/ISurfaceFlingerConfigs.hal
+++ b/configstore/1.0/ISurfaceFlingerConfigs.hal
@@ -108,4 +108,10 @@
      * FramebufferSurface.
      */
     maxFrameBufferAcquiredBuffers() generates(OptionalInt64 value);
+
+    /**
+     * Returns true if surface flinger should start
+     * hardware.graphics.allocator@2.0::IAllocator service.
+     */
+    startGraphicsAllocatorService() generates(OptionalBool value);
 };