Rename compiler, linker and installer methods to be unique

compiler, linker, and installer interfaces may be implemented by a
single decorator object, rename their methods to be unique to avoid the
same method being called multiple times.

Test: out/soong/build.ninja unchanged
Change-Id: I1608c41cd68f614ba99c11bb9fcc7936f618d9aa
diff --git a/cc/ndk_library.go b/cc/ndk_library.go
index 50db938..903a96b 100644
--- a/cc/ndk_library.go
+++ b/cc/ndk_library.go
@@ -211,14 +211,14 @@
 	libraryLinker
 }
 
-func (linker *stubLinker) deps(ctx BaseModuleContext, deps Deps) Deps {
+func (linker *stubLinker) linkerDeps(ctx BaseModuleContext, deps Deps) Deps {
 	return Deps{}
 }
 
-func (linker *stubLinker) flags(ctx ModuleContext, flags Flags) Flags {
+func (linker *stubLinker) linkerFlags(ctx ModuleContext, flags Flags) Flags {
 	linker.libraryLinker.libName = strings.TrimSuffix(ctx.ModuleName(),
 		ndkLibrarySuffix)
-	return linker.libraryLinker.flags(ctx, flags)
+	return linker.libraryLinker.linkerFlags(ctx, flags)
 }
 
 type stubInstaller struct {