[Unitrace] Fix finding libxptifw

[ldorau]

Description

Fix finding libxptifw.so when CMake has found it:

-- Found Xptifw: ~/work/llvm/build/lib/libxptifw.so
-- XPTI found

but ldd has not:

/usr/bin/ld: cannot find -lxptifw: No such file or directory collect2: error: ld returned 1 exit status

Fixes: #101

Area of the change

• PTI SDK
• Unitrace
• Other Tool(s) - e.g. Sysmon, or any code above SDK directory (except Unitrace)
• Infrastructure - e.g. GitHub workflows, and other whole repo impacted

Type(s) of change

• Bug fix - change that fixes an issue
• New feature - change that adds functionality
• Performance improvement - change that lowers profiling overhead
• Code refactoring or clean up
• Tests - change in tests
• Samples - change in samples
• Documentation - documentation update

Tests

• Added - required for new features and some bug fixes
• Not needed

Specific HW and OS where to run the test unless generic:

For example, 2 discrete GPUs, integrated GPU, specific GPU model, PyTorch integration test(s)

Checklist

• Have all tests, except Quarantined, passed locally?
• Do all newly added source files have a license header?

Details on API(s) or command line option(s) changes

• API(s) or command line options not changed
• New API or command line options added
• Existing API(s) or command line options changed - so backward compatibility broken
• Unknown

If applies - details on the broken backward compatibility

Indicate what API(s) backward compatibility or option(s) is broken, why it might be OK, or suggest on how to deal with it moving forward

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