Revert renaming symbols in KernelSU driver

- In order to reduce the extra patch code and increase the rate of hunk succeed, we do not rename the symbols in KernelSU drvier but instead do it all in kernel/kallsym.c

- Make susfs_starts_with() global as it maybe useful in future

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

kernel/kpm/compact.c

@@ -52,7 +52,7 @@ int sukisu_is_uid_should_umount(uid_t uid) {
 
 static
 int sukisu_is_current_uid_manager() {
-    return ksu_is_manager();
+    return is_manager();
 }
 
 static