bp2build: convert host & prebuilt header libraries

Test: bp2build.sh
Change-Id: If8165eac7c17c4eef3686067257aa792121db59d
diff --git a/cc/library.go b/cc/library.go
index 5720944..b18f90d 100644
--- a/cc/library.go
+++ b/cc/library.go
@@ -443,6 +443,8 @@
 	module, library := NewLibrary(android.HostSupported)
 	library.BuildOnlyStatic()
 	module.sdkMemberTypes = []android.SdkMemberType{staticLibrarySdkMemberType}
+	module.bazelable = true
+	module.bazelHandler = &ccLibraryBazelHandler{module: module}
 	return module.Init()
 }