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

Since commit 84af7a6194e4 ("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>
diff --git a/drivers/w1/Kconfig b/drivers/w1/Kconfig
index 3e7ad7b..0d6f467 100644
--- a/drivers/w1/Kconfig
+++ b/drivers/w1/Kconfig
@@ -2,7 +2,7 @@
 menuconfig W1
 	tristate "Dallas's 1-wire support"
 	depends on HAS_IOMEM
-	---help---
+	help
 	  Dallas' 1-wire bus is useful to connect slow 1-pin devices
 	  such as iButtons and thermal sensors.
 
@@ -17,7 +17,7 @@
 	depends on CONNECTOR
 	bool "Userspace communication over connector"
 	default y
-	---help---
+	help
 	  This allows to communicate with userspace using connector. For more
 	  information see <file:Documentation/driver-api/connector.rst>.
 	  There are three types of messages between w1 core and userspace: