radeonsi/ci: import piglit & cts build scripts

Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36382>

src/gallium/drivers/radeonsi/ci/build/conf_glcts.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+#
+# Copyright 2025 Advanced Micro Devices, Inc.
+# SPDX-License-Identifier: MIT
+
+set -e
+python3 external/fetch_sources.py
+
+rm -rf build
+mkdir build
+cmake -B build . -G Ninja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DGLCTS_GTF_TARGET=gl -DDEQP_TARGET=x11_egl
+
+rm -rf build_es
+mkdir build_es
+cmake -B build_es . -G Ninja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DGLCTS_GTF_TARGET=gles32 -DDEQP_TARGET=x11_egl
+
+echo
+echo !!! GLCTS is not supposed to be installed !!!
+echo Type:
+echo '   ninja -Cbuild && ninja -Cbuild_es'

src/gallium/drivers/radeonsi/ci/build/conf_piglit.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+#
+# Copyright 2025 Advanced Micro Devices, Inc.
+# SPDX-License-Identifier: MIT
+
+set -e
+
+cmake . -G Ninja -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+	-DPIGLIT_BUILD_DMA_BUF_TESTS=ON \
+	-DPIGLIT_BUILD_GLES1_TESTS=ON \
+	-DPIGLIT_BUILD_GLES2_TESTS=ON \
+	-DPIGLIT_BUILD_GLES3_TESTS=ON \
+	-DPIGLIT_BUILD_GLX_TESTS=ON \
+	-DPIGLIT_BUILD_GL_TESTS=ON \
+	-DPIGLIT_USE_WAFFLE=ON
+
+echo
+echo !!! Piglit is not supposed to be installed !!!

src/gallium/drivers/radeonsi/ci/build/conf_waffle.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+#
+# Copyright 2025 Advanced Micro Devices, Inc.
+# SPDX-License-Identifier: MIT
+
+set -e
+
+prefix=${PREFIX:-/usr}
+buildtype=${BUILD_TYPE:-debugoptimized}
+
+rm -r build
+mkdir build
+meson build --prefix $prefix --libdir $prefix/lib/$arch --datadir $prefix/share --buildtype $buildtype
+
+echo
+echo !!! Make sure this output contains: Supported platforms: ... gbm !!!