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>

net/6lowpan/Kconfig

@@ -2,7 +2,7 @@
 menuconfig 6LOWPAN
 	tristate "6LoWPAN Support"
 	depends on IPV6
-	---help---
+	help
 	  This enables IPv6 over Low power Wireless Personal Area Network -
 	  "6LoWPAN" which is supported by IEEE 802.15.4 or Bluetooth stacks.
 
@@ -10,7 +10,7 @@ config 6LOWPAN_DEBUGFS
 	bool "6LoWPAN debugfs support"
 	depends on 6LOWPAN
 	depends on DEBUG_FS
-	---help---
+	help
 	  This enables 6LoWPAN debugfs support. For example to manipulate
 	  IPHC context information at runtime.
 
@@ -18,7 +18,7 @@ menuconfig 6LOWPAN_NHC
 	tristate "Next Header and Generic Header Compression Support"
 	depends on 6LOWPAN
 	default y
-	---help---
+	help
 	  Support for next header and generic header compression defined in
 	  RFC6282 and RFC7400.
 
@@ -27,78 +27,78 @@ if 6LOWPAN_NHC
 config 6LOWPAN_NHC_DEST
 	tristate "Destination Options Header Support"
 	default y
-	---help---
+	help
 	  6LoWPAN IPv6 Destination Options Header compression according to
 	  RFC6282.
 
 config 6LOWPAN_NHC_FRAGMENT
 	tristate "Fragment Header Support"
 	default y
-	---help---
+	help
 	  6LoWPAN IPv6 Fragment Header compression according to RFC6282.
 
 config 6LOWPAN_NHC_HOP
 	tristate "Hop-by-Hop Options Header Support"
 	default y
-	---help---
+	help
 	  6LoWPAN IPv6 Hop-by-Hop Options Header compression according to
 	  RFC6282.
 
 config 6LOWPAN_NHC_IPV6
 	tristate "IPv6 Header Support"
 	default y
-	---help---
+	help
 	  6LoWPAN IPv6 Header compression according to RFC6282.
 
 config 6LOWPAN_NHC_MOBILITY
 	tristate "Mobility Header Support"
 	default y
-	---help---
+	help
 	  6LoWPAN IPv6 Mobility Header compression according to RFC6282.
 
 config 6LOWPAN_NHC_ROUTING
 	tristate "Routing Header Support"
 	default y
-	---help---
+	help
 	  6LoWPAN IPv6 Routing Header compression according to RFC6282.
 
 config 6LOWPAN_NHC_UDP
 	tristate "UDP Header Support"
 	default y
-	---help---
+	help
 	  6LoWPAN IPv6 UDP Header compression according to RFC6282.
 
 config 6LOWPAN_GHC_EXT_HDR_HOP
 	tristate "GHC Hop-by-Hop Options Header Support"
-	---help---
+	help
 	  6LoWPAN IPv6 Hop-by-Hop option generic header compression according
 	  to RFC7400.
 
 config 6LOWPAN_GHC_UDP
 	tristate "GHC UDP Support"
-	---help---
+	help
 	  6LoWPAN IPv6 UDP generic header compression according to RFC7400.
 
 config 6LOWPAN_GHC_ICMPV6
 	tristate "GHC ICMPv6 Support"
-	---help---
+	help
 	  6LoWPAN IPv6 ICMPv6 generic header compression according to RFC7400.
 
 config 6LOWPAN_GHC_EXT_HDR_DEST
 	tristate "GHC Destination Options Header Support"
-	---help---
+	help
 	  6LoWPAN IPv6 destination option generic header compression according
 	  to RFC7400.
 
 config 6LOWPAN_GHC_EXT_HDR_FRAG
 	tristate "GHC Fragmentation Options Header Support"
-	---help---
+	help
 	  6LoWPAN IPv6 fragmentation option generic header compression
 	  according to RFC7400.
 
 config 6LOWPAN_GHC_EXT_HDR_ROUTE
 	tristate "GHC Routing Options Header Support"
-	---help---
+	help
 	  6LoWPAN IPv6 routing option generic header compression according
 	  to RFC7400.