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>

drivers/platform/chrome/Kconfig

@@ -16,7 +16,7 @@ config MFD_CROS_EC
 menuconfig CHROME_PLATFORMS
 	bool "Platform support for Chrome hardware"
 	depends on X86 || ARM || ARM64 || COMPILE_TEST
-	---help---
+	help
 	  Say Y here to get to see options for platform support for
 	  various Chromebooks and Chromeboxes. This option alone does
 	  not add any kernel code.
@@ -28,7 +28,7 @@ if CHROME_PLATFORMS
 config CHROMEOS_LAPTOP
 	tristate "Chrome OS Laptop"
 	depends on I2C && DMI && X86
-	---help---
+	help
 	  This driver instantiates i2c and smbus devices such as
 	  light sensors and touchpads.
 
@@ -38,7 +38,7 @@ config CHROMEOS_LAPTOP
 config CHROMEOS_PSTORE
 	tristate "Chrome OS pstore support"
 	depends on X86
-	---help---
+	help
 	  This module instantiates the persistent storage on x86 ChromeOS
 	  devices. It can be used to store away console logs and crash
 	  information across reboots.
@@ -112,7 +112,7 @@ config CROS_EC_SPI
 	tristate "ChromeOS Embedded Controller (SPI)"
 	depends on CROS_EC && SPI
 
-	---help---
+	help
 	  If you say Y here, you get support for talking to the ChromeOS EC
 	  through a SPI bus, using a byte-level protocol. Since the EC's
 	  response time cannot be guaranteed, we support ignoring