Revive SUS_MAP feature

- More details in boot-completed.sh template, ksu_susfs usage and KernelSU Kconfig

Co-authored-by: simonpunk <simonpunk2016@gmail.com>

kernel/Kconfig

@@ -217,6 +217,17 @@ config KSU_SUSFS_SUS_SU
                 the same as the su implementaion of non-gki kernel without kprobe supported.
       - Only apps with root access granted by ksu manager are allowed to get root.
 
+config KSU_SUSFS_SUS_MAP
+    bool "Enable to hide some mmapped real file from different proc maps interfaces"
+    depends on KSU_SUSFS
+    default y
+    help
+      - Allow hiding mmapped real file from /proc/<pid>/[maps|smaps|smaps_rollup|map_files|mem|pagemap]
+      - It does NOT support hiding for anon memory.
+      - It does NOT hide any inline hooks or plt hooks cause by the injected library itself.
+      - It may not be able to evade detections by apps that implement a good injection detection.
+      - Effective only on zygote spawned umounted user app process.
+
 endmenu
 
 endmenu