webkitgtk: Add reproducibility fix

When the date rolled from one year to another this highlighted a reproducibility
issue. This could be better fixed by using SOURCE_DATE_EPOCH from the environment
but I'm not sure how you do that in ruby. Help from someone with that knowledge
to submit that upstream very welcome.

(From OE-Core rev: 4d561c98f4d2e68d595aae4b03df1420cb01c3f7)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-sato/webkit/webkitgtk/reproducibility.patch

@@ -0,0 +1,22 @@
+Injection a year based on the current date isn't reproducible. Hack this
+to a specific year for now for reproducibilty and to avoid autobuilder failures.
+
+The correct fix would be to use SOURCE_DATE_EPOCH from the environment and
+then this could be submitted upstream, sadly my ruby isn't up to that.
+
+Upstream-Status: Pending [could be reworked]
+Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
+
+Index: webkitgtk-2.34.2/Source/JavaScriptCore/generator/GeneratedFile.rb
+===================================================================
+--- webkitgtk-2.34.2.orig/Source/JavaScriptCore/generator/GeneratedFile.rb
++++ webkitgtk-2.34.2/Source/JavaScriptCore/generator/GeneratedFile.rb
+@@ -25,7 +25,7 @@ require 'date'
+ require 'digest'
+ 
+ $LICENSE = <<-EOF
+-Copyright (C) #{Date.today.year} Apple Inc. All rights reserved.
++Copyright (C) 2021 Apple Inc. All rights reserved.
+ 
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions

meta/recipes-sato/webkit/webkitgtk_2.34.2.bb

@@ -18,6 +18,7 @@ SRC_URI = "https://www.webkitgtk.org/releases/${BPN}-${PV}.tar.xz \
            file://reduce-memory-overheads.patch \
            file://musl-lower-stack-usage.patch \
            file://0001-Fix-build-without-opengl-or-es.patch \
+           file://reproducibility.patch \
            "
 
 SRC_URI[sha256sum] = "584677d6e7cae12e27cdcc8e05b4cf73b54849a24afc3d7a40cec91016deff00"