Really fix Mac build.

This reverts commit 66bfb9adac, and
instead includes a header that has a definition of TEMP_FAILURE_RETRY
for macOS.

Bug: http://b/181852591
Test: N/A
Change-Id: I63ccdcb58a2b2806217e3faedde9ba33936c8189

libcutils/Android.bp

@@ -170,14 +170,10 @@ cc_library {
         linux_bionic: {
             enabled: true,
         },
-        linux: {
-            srcs: [
-                "fs_config.cpp",
-            ],
-        },
         not_windows: {
             srcs: libcutils_nonwindows_sources + [
                 "ashmem-host.cpp",
+                "fs_config.cpp",
                 "trace-host.cpp",
             ],
         },
@@ -197,6 +193,7 @@ cc_library {
             srcs: libcutils_nonwindows_sources + [
                 "android_reboot.cpp",
                 "ashmem-dev.cpp",
+                "fs_config.cpp",
                 "klog.cpp",
                 "partition_utils.cpp",
                 "qtaguid.cpp",

libcutils/fs_config.cpp

@@ -35,6 +35,7 @@
 #include <string>
 
 #include <android-base/strings.h>
+#include <cutils/fs.h>
 #include <log/log.h>
 #include <private/android_filesystem_config.h>