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/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index b7d404b..667cfc5 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -31,13 +31,13 @@
 	select GENERIC_CLOCKEVENTS_BROADCAST
 	select MODULES_USE_ELF_RELA
 	select GENERIC_CPU_DEVICES
-	---help---
+	help
 	  Qualcomm Hexagon is a processor architecture designed for high
 	  performance and low power across a wide variety of applications.
 
 config HEXAGON_PHYS_OFFSET
 	def_bool y
-	---help---
+	help
 	  Platforms that don't load the kernel at zero set this.
 
 config FRAME_POINTER
@@ -83,7 +83,7 @@
 
 config HEXAGON_COMET
 	bool "Comet Board"
-	---help---
+	help
 	  Support for the Comet platform.
 
 endchoice
@@ -104,7 +104,7 @@
 
 config SMP
 	bool "Multi-Processing support"
-	---help---
+	help
 	  Enables SMP support in the kernel.  If unsure, say "Y"
 
 config NR_CPUS
@@ -112,7 +112,7 @@
 	range 2 6 if SMP
 	default "1" if !SMP
 	default "6" if SMP
-	---help---
+	help
 	  This allows you to specify the maximum number of CPUs which this
 	  kernel will support.  The maximum supported value is 6 and the
 	  minimum value which makes sense is 2.
@@ -123,7 +123,7 @@
 choice
 	prompt "Kernel page size"
 	default PAGE_SIZE_4KB
-	---help---
+	help
 	  Changes the default page size; use with caution.
 
 config PAGE_SIZE_4KB