Support static_executable: true for musl builds

Bug: 190084016
Test: aosp-build-tools linux_musl build
Change-Id: I630c54033c44ddd6b54388ed36642629cf2e4e5b

cc/binary.go

@@ -212,7 +212,7 @@ func NewBinary(hod android.HostOrDeviceSupported) (*Module, *binaryDecorator) {
 func (binary *binaryDecorator) linkerInit(ctx BaseModuleContext) {
 	binary.baseLinker.linkerInit(ctx)
 
-	if !ctx.toolchain().Bionic() {
+	if !ctx.toolchain().Bionic() && !ctx.toolchain().Musl() {
 		if ctx.Os() == android.Linux {
 			// Unless explicitly specified otherwise, host static binaries are built with -static
 			// if HostStaticBinaries is true for the product configuration.