CI: Update to LLVM-13

- Switch sources and CI scripts to install and use LLVM-13
- Update to latest "focal" tag.

Signed-off-by: Tom Rini <trini@konsulko.com>

.azure-pipelines.yml

@@ -2,7 +2,7 @@ variables:
   windows_vm: vs2017-win2016
   ubuntu_vm: ubuntu-18.04
   macos_vm: macOS-10.15
-  ci_runner_image: trini/u-boot-gitlab-ci-runner:focal-20210827-30Sep2021
+  ci_runner_image: trini/u-boot-gitlab-ci-runner:focal-20210921-05Oct2021
   # Add '-u 0' options for Azure pipelines, otherwise we get "permission
   # denied" error when it tries to "useradd -m -u 1001 vsts_azpcontainer",
   # since our $(ci_runner_image) user is not root.
@@ -183,7 +183,7 @@ jobs:
           TEST_PY_BD: "sandbox"
         sandbox_clang:
           TEST_PY_BD: "sandbox"
-          OVERRIDE: "-O clang-12"
+          OVERRIDE: "-O clang-13"
         sandbox_spl:
           TEST_PY_BD: "sandbox_spl"
           TEST_PY_TEST_SPEC: "test_ofplatdata or test_handoff or test_spl"

.gitlab-ci.yml

@@ -2,7 +2,7 @@
 
 # Grab our configured image.  The source for this is found at:
 # https://source.denx.de/u-boot/gitlab-ci-runner
-image: trini/u-boot-gitlab-ci-runner:focal-20210827-30Sep2021
+image: trini/u-boot-gitlab-ci-runner:focal-20210921-05Oct2021
 
 # We run some tests in different order, to catch some failures quicker.
 stages:
@@ -190,7 +190,7 @@ sandbox test.py:
 sandbox with clang test.py:
   variables:
     TEST_PY_BD: "sandbox"
-    OVERRIDE: "-O clang-12"
+    OVERRIDE: "-O clang-13"
   <<: *buildman_and_testpy_dfn
 
 sandbox_spl test.py:

tools/docker/Dockerfile

@@ -2,7 +2,7 @@
 # This Dockerfile is used to build an image containing basic stuff to be used
 # to build U-Boot and run our test suites.
 
-FROM ubuntu:focal-20210827
+FROM ubuntu:focal-20210921
 MAINTAINER Tom Rini <trini@konsulko.com>
 LABEL Description=" This image is for building U-Boot inside a container"
 
@@ -12,7 +12,7 @@ ENV DEBIAN_FRONTEND=noninteractive
 # Add LLVM repository
 RUN apt-get update && apt-get install -y gnupg2 wget xz-utils && rm -rf /var/lib/apt/lists/*
 RUN wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -
-RUN echo deb http://apt.llvm.org/focal/ llvm-toolchain-focal-12 main | tee /etc/apt/sources.list.d/llvm.list
+RUN echo deb http://apt.llvm.org/focal/ llvm-toolchain-focal-13 main | tee /etc/apt/sources.list.d/llvm.list
 
 # Manually install the kernel.org "Crosstool" based toolchains for gcc-11.1.0
 RUN wget -O - https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/11.1.0/x86_64-gcc-11.1.0-nolibc-aarch64-linux.tar.xz | tar -C /opt -xJ
@@ -39,7 +39,7 @@ RUN apt-get update && apt-get install -y \
 	binutils-dev \
 	bison \
 	build-essential \
-	clang-12 \
+	clang-13 \
 	coreutils \
 	cpio \
 	cppcheck \