Consolidate ldflags that are used on all devices

Move ldflags that are specified for all devices into
deviceGlobalLdflags, and add them to linker.go:
-Wl,-z,noexecstack
-Wl,-z,relro
-Wl,-z,now
-Wl,--build-id=md5
-Wl,--warn-shared-textrel
-Wl,--fatal-warnings
-Wl,--no-undefined-version

Bug: 68855788
Test: m checkbuild
Change-Id: I82561b4189287d7638006f9e298c5151f9930c5e

cc/linker.go

@@ -196,7 +196,13 @@ func (linker *baseLinker) linkerDeps(ctx BaseModuleContext, deps Deps) Deps {
 func (linker *baseLinker) linkerFlags(ctx ModuleContext, flags Flags) Flags {
 	toolchain := ctx.toolchain()
 
+	hod := "Host"
+	if ctx.Os().Class == android.Device {
+		hod = "Device"
+	}
+
 	if !ctx.noDefaultCompilerFlags() {
+		flags.LdFlags = append(flags.LdFlags, fmt.Sprintf("${config.%sGlobalLdflags}", hod))
 		if Bool(linker.Properties.Allow_undefined_symbols) {
 			if ctx.Darwin() {
 				// darwin defaults to treating undefined symbols as errors