treewide: replace '---help---' in Kconfig files with 'help'

Since commit 84af7a6194 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.

This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.

There are a variety of indentation styles found.

  a) 4 spaces + '---help---'
  b) 7 spaces + '---help---'
  c) 8 spaces + '---help---'
  d) 1 space + 1 tab + '---help---'
  e) 1 tab + '---help---'    (correct indentation)
  f) 1 tab + 1 space + '---help---'
  g) 1 tab + 2 spaces + '---help---'

In order to convert all of them to 1 tab + 'help', I ran the
following commend:

  $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

fs/notify/fanotify/Kconfig

@@ -4,7 +4,7 @@ config FANOTIFY
 	select FSNOTIFY
 	select EXPORTFS
 	default n
-	---help---
+	help
 	   Say Y here to enable fanotify support.  fanotify is a file access
 	   notification system which differs from inotify in that it sends
 	   an open file descriptor to the userspace listener along with
@@ -17,7 +17,7 @@ config FANOTIFY_ACCESS_PERMISSIONS
 	depends on FANOTIFY
 	depends on SECURITY
 	default n
-	---help---
+	help
 	   Say Y here is you want fanotify listeners to be able to make permissions
 	   decisions concerning filesystem events.  This is used by some fanotify
 	   listeners which need to scan files before allowing the system access to

fs/notify/inotify/Kconfig

@@ -3,7 +3,7 @@ config INOTIFY_USER
 	bool "Inotify support for userspace"
 	select FSNOTIFY
 	default y
-	---help---
+	help
 	  Say Y here to enable inotify support for userspace, including the
 	  associated system calls.  Inotify allows monitoring of both files and
 	  directories via a single open fd.  Events are read from the file