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/m68k/Kconfig.cpu

@@ -343,7 +343,7 @@ config M68KFPU_EMU_ONLY
 config ADVANCED
 	bool "Advanced configuration options"
 	depends on MMU
-	---help---
+	help
 	  This gives you access to some advanced options for the CPU. The
 	  defaults should be fine for most users, but these options may make
 	  it possible for you to improve performance somewhat if you know what
@@ -358,7 +358,7 @@ config ADVANCED
 config RMW_INSNS
 	bool "Use read-modify-write instructions"
 	depends on ADVANCED
-	---help---
+	help
 	  This allows to use certain instructions that work with indivisible
 	  read-modify-write bus cycles. While this is faster than the
 	  workaround of disabling interrupts, it can conflict with DMA
@@ -386,7 +386,7 @@ config ARCH_DISCONTIGMEM_ENABLE
 config 060_WRITETHROUGH
 	bool "Use write-through caching for 68060 supervisor accesses"
 	depends on ADVANCED && M68060
-	---help---
+	help
 	  The 68060 generally uses copyback caching of recently accessed data.
 	  Copyback caching means that memory writes will be held in an on-chip
 	  cache and only written back to memory some time later.  Saying Y

arch/m68k/Kconfig.devices

@@ -59,7 +59,7 @@ config NFETH
 config ATARI_ETHERNAT
 	bool "Atari EtherNAT Ethernet support"
 	depends on ATARI
-	---help---
+	help
 	  Say Y to include support for the EtherNAT network adapter for the
 	  CT/60 extension port.
 
@@ -69,7 +69,7 @@ config ATARI_ETHERNAT
 config ATARI_ETHERNEC
 	bool "Atari EtherNEC Ethernet support"
 	depends on ATARI_ROM_ISA
-	---help---
+	help
 	  Say Y to include support for the EtherNEC network adapter for the
 	  ROM port. The driver works by polling instead of interrupts, so it
 	  is quite slow.
@@ -120,7 +120,7 @@ config HPAPCI
 config SERIAL_CONSOLE
 	bool "Support for serial port console"
 	depends on AMIGA_BUILTIN_SERIAL=y
-	---help---
+	help
 	  If you say Y here, it will be possible to use a serial port as the
 	  system console (the system console is the device which receives all
 	  kernel messages and warnings and which allows logins in single user

arch/m68k/Kconfig.machine

@@ -437,7 +437,7 @@ config ROMSIZE
 
 choice
 	prompt "Kernel executes from"
-	---help---
+	help
 	  Choose the memory type that the kernel will be running in.
 
 config RAMKERNEL