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>

arch/ia64/Kconfig

@@ -243,7 +243,7 @@ config HOTPLUG_CPU
 	bool "Support for hot-pluggable CPUs"
 	depends on SMP
 	default n
-	---help---
+	help
 	  Say Y here to experiment with turning CPUs off and on.  CPUs
 	  can be controlled through /sys/devices/system/cpu/cpu#.
 	  Say N if you want to disable CPU hotplug.
@@ -266,7 +266,7 @@ config PERMIT_BSP_REMOVE
 	bool "Support removal of Bootstrap Processor"
 	depends on HOTPLUG_CPU
 	default n
-	---help---
+	help
 	Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 	support. 
 
@@ -274,7 +274,7 @@ config FORCE_CPEI_RETARGET
 	bool "Force assumption that CPEI can be re-targeted"
 	depends on PERMIT_BSP_REMOVE
 	default n
-	---help---
+	help
 	Say Y if you need to force the assumption that CPEI can be re-targeted to
 	any cpu in the system. This hint is available via ACPI 3.0 specifications.
 	Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.