cross_toolchain.rb: Update kernel and change tmp

.gitignore

@@ -1,3 +1,4 @@
 /dist-newstyle/
 /config.toml
 /log/
+/tmp/

README.md

@@ -50,4 +50,6 @@ will print:
 2025-02-04 (Disconnecting [])
 ```
 
+## cross\_toolchain.rb
+
 ## tea-cleaner

bin/7digital.rb

@@ -1,4 +1,8 @@
 #!/usr/bin/env ruby
+# This Source Code Form is subject to the terms of the Mozilla Public License,
+# v. 2.0. If a copy of the MPL was not distributed with this file, You can
+# obtain one at https://mozilla.org/MPL/2.0/. -}
+
 # frozen_string_literal: true
 
 require 'pathname'

bin/cross_toolchain.rb

@@ -14,10 +14,10 @@ require 'pathname'
 
 BINUTILS_VERSION = '2.43.1'
 GLIBC_VERSION = '2.40'
-KERNEL_VERSION = '5.15.166'
+KERNEL_VERSION = '5.15.178'
 GCC_VERSION = "14.2.0"
 
-TMP = Pathname.new('./build')
+TMP = Pathname.new('./tmp')
 
 class BuildTarget
   attr_accessor(:build, :gcc, :target, :tmp)

bin/read_logs.rb

@@ -1,4 +1,9 @@
 #!/usr/bin/env ruby
+# This Source Code Form is subject to the terms of the Mozilla Public License,
+# v. 2.0. If a copy of the MPL was not distributed with this file, You can
+# obtain one at https://mozilla.org/MPL/2.0/. -}
+
+# frozen_string_literal: true
 
 require 'date'
 require 'zlib'