[rust] Pass cc dependencies as linker flags.

In order to support cc dependencies which do not start with the 'lib'
prefix, we can't pass them through the -l flag. Instead, we can pass
them directly to linker flags.

Bug: 166151658
Test: cd external/rust/; mma
Test: cd external/crosvm/; mma
Test: Test linking to a cc dep that does not begin with 'lib'

Change-Id: I5acbf3d3405e66446f3eae600b35683c4eb3d8a5

rust/binary.go

@@ -112,6 +112,7 @@ func (binary *binaryDecorator) compile(ctx ModuleContext, flags Flags, deps Path
 	binary.unstrippedOutputFile = outputFile
 
 	flags.RustFlags = append(flags.RustFlags, deps.depFlags...)
+	flags.LinkFlags = append(flags.LinkFlags, deps.linkObjects...)
 
 	outputs := TransformSrcToBinary(ctx, srcPath, deps, flags, outputFile, deps.linkDirs)
 	binary.coverageFile = outputs.coverageFile