[llvm] [Github][libc] Add qemu-system-hexagon to the libc container (PR #219433)

[Aiden Grossman via llvm-commits]

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@@ -36,7 +37,13 @@ RUN apt-get update && \
     gnupg \
     cmake \
     m4 \
-    linux-libc-dev && \
+    linux-libc-dev \
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boomanaiden154 wrote:

Can we avoid all these extra deps and do the build in a separate container and just copy over the QEMU binary?

https://github.com/llvm/llvm-project/pull/219433