Make TestContext.RegisterModuleType take an android.ModuleFactory

Avoid having to pass ModuleFactoryAdaptor to every call to
RegisterModuleType in a test by wrapping RegisterModuleType.

Test: all soong tests
Change-Id: If8847d16487de0479cc3020b728256922b3cadba

bpf/bpf_test.go

@@ -55,7 +55,7 @@ func testContext(bp string) *android.TestContext {
 	}
 
 	ctx := cc.CreateTestContext(bp, mockFS, android.Android)
-	ctx.RegisterModuleType("bpf", android.ModuleFactoryAdaptor(bpfFactory))
+	ctx.RegisterModuleType("bpf", bpfFactory)
 	ctx.Register()
 
 	return ctx