[llvm] [llvm-objcopy] Support SREC output format (PR #75874)

[James Henderson via llvm-commits]

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@@ -1,36 +1,40 @@
+## Check for basic functionality using an input file with
+## various section types, adresses, data, and no segments.
+
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jh7370 wrote:

Nit: as the comment above is tightly-linked to the RUN lines immediately below, I'd get rid of the blank line.

https://github.com/llvm/llvm-project/pull/75874