[CMSIS-NN] Reduction in code size of AOT test runner binary

[ashutosh-arm]

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This change reduced the code size of AOT test runner binary for CMSIS-NN flow.

Presently, integration tests for CMSIS-NN generate binaries which includes all the CMSIS-NN kernels sources. This fix introduces additional compilation and runtime knobs to pick kernel sources for which TVM has generated the code.

[ashutosh-arm]

cc @leandron @Mousius for code review.

[ashutosh-arm]

There is an equivalent PR: https://github.com/apache/tvm/pull/13815