Azure/GitLab: Use buildman -T0 for binman, etc, test

There are times where buildman seems to get stuck in this job when in
CI.  Forcing single-threaded here allows us to complete and move on.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/.azure-pipelines.yml b/.azure-pipelines.yml
index 013b170..506e0c0 100644
--- a/.azure-pipelines.yml
+++ b/.azure-pipelines.yml
@@ -148,7 +148,7 @@
           export UBOOT_TRAVIS_BUILD_DIR=/tmp/sandbox_spl
           export PYTHONPATH=${UBOOT_TRAVIS_BUILD_DIR}/scripts/dtc/pylibfdt
           export PATH=${UBOOT_TRAVIS_BUILD_DIR}/scripts/dtc:${PATH}
-          ./tools/buildman/buildman -o ${UBOOT_TRAVIS_BUILD_DIR} -w sandbox_spl
+          ./tools/buildman/buildman -T0 -o ${UBOOT_TRAVIS_BUILD_DIR} -w sandbox_spl
           ./tools/binman/binman --toolpath ${UBOOT_TRAVIS_BUILD_DIR}/tools test
           ./tools/buildman/buildman -t
           ./tools/dtoc/dtoc -t