github: use clang for ppc64le build

the gcc compiler segfaults, use clang.

Signed-off-by: Giuseppe Scrivano <[email protected]>

.github/workflows/test.yaml

@@ -21,6 +21,7 @@ jobs:
             distro: ubuntu_latest
           - arch: ppc64le
             distro: ubuntu_latest
+            env: CC=clang
           - arch: riscv64
             distro: ubuntu_latest
     steps:
@@ -40,7 +41,7 @@ jobs:
 
           install: |
             apt-get update -y
-            apt-get install -y automake libtool autotools-dev libseccomp-dev git make libcap-dev cmake pkg-config gcc wget go-md2man libsystemd-dev gperf clang-format libyajl-dev libprotobuf-c-dev
+            apt-get install -y automake libtool autotools-dev libseccomp-dev git make libcap-dev cmake pkg-config gcc wget go-md2man libsystemd-dev gperf clang-format libyajl-dev libprotobuf-c-dev clang
 
           run: |
             find $(pwd) -name '.git' -exec bash -c 'git config --global --add safe.directory ${0%/.git}' {} \;