add rgtc externsion support

Bug: b/213168245
Change-Id: Ib05f46888221ea76ab3707baae762d6f124efedb
diff --git a/host-common/FeatureControlDefHost.h b/host-common/FeatureControlDefHost.h
index 8b43788..72d3c9f 100644
--- a/host-common/FeatureControlDefHost.h
+++ b/host-common/FeatureControlDefHost.h
@@ -71,5 +71,6 @@
 FEATURE_CONTROL_ITEM(GuestUsesAngle)
 FEATURE_CONTROL_ITEM(VirtioVsockPipe)
 FEATURE_CONTROL_ITEM(S3tcTextureSupport)
+FEATURE_CONTROL_ITEM(RgtcTextureSupport)
 FEATURE_CONTROL_ITEM(VulkanNativeSwapchain)
 FEATURE_CONTROL_ITEM(VirtioGpuFenceContexts)