mesa: update 20.1.8 -> 20.2.1

Build tweaks:
- drop separate dri option and the patch that adds it; just setting -Ddri-drivers='' is enough
- strip leading/trailing commas from drivers' lists, as upstream no longer allows blank entries if the list
is not empty (e.g. -Ddri-drivers=,driver1,driver2 is now producing an error).
- drop the long-obsolete llvm 3.3/3.2 logic

License-Update: reformatted into rst
(From OE-Core rev: 8682024ef029241c75e224174fd0b93835f88df3)

Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 0 insertions, 46 deletions

diff --git a/meta/recipes-graphics/mesa/files/0003-Allow-enable-DRI-without-DRI-drivers.patch b/meta/recipes-graphics/mesa/files/0003-Allow-enable-DRI-without-DRI-drivers.patch
deleted file mode 100644
index a0536c87ac..0000000000
--- a/meta/recipes-graphics/mesa/files/0003-Allow-enable-DRI-without-DRI-drivers.patch
+++ /dev/null
@@ -1,46 +0,0 @@
-From 7eaa21a79ce6d6e92f6bf98c28b68e3fcb4d7874 Mon Sep 17 00:00:00 2001
-From: Fabio Berton <fabio.berton@ossystems.com.br>
-Date: Wed, 12 Jun 2019 14:18:31 -0300
-Subject: [PATCH] Allow enable DRI without DRI drivers
-
-Upstream-Status: Pending
-
-Signed-off-by: Andrei Gherzan <andrei@gherzan.ro>
-Signed-off-by: Fabio Berton <fabio.berton@ossystems.com.br>
-Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
-
----
- meson.build       | 2 +-
- meson_options.txt | 6 ++++++
- 2 files changed, 7 insertions(+), 1 deletion(-)
-
-diff --git a/meson.build b/meson.build
-index a954118..62864c6 100644
---- a/meson.build
-+++ b/meson.build
-@@ -154,7 +154,7 @@ with_dri_r200 = dri_drivers.contains('r200')
- with_dri_nouveau = dri_drivers.contains('nouveau')
- with_dri_swrast = dri_drivers.contains('swrast')
- 
--with_dri = dri_drivers.length() != 0 and dri_drivers != ['']
-+with_dri = get_option('dri') or (dri_drivers.length() != 0 and dri_drivers != [''])
- 
- gallium_drivers = get_option('gallium-drivers')
- if gallium_drivers.contains('auto')
-diff --git a/meson_options.txt b/meson_options.txt
-index 637ff14..700c34c 100644
---- a/meson_options.txt
-+++ b/meson_options.txt
-@@ -35,6 +35,12 @@ option(
-   choices : ['auto', 'true', 'false'],
-   description : 'enable support for dri3'
- )
-+option(
-+  'dri',
-+  type : 'boolean',
-+  value : false,
-+  description : 'enable support for dri'
-+)
- option(
-   'dri-drivers',
-   type : 'array',