Move c-picker detection into UnitTest.cmake

The algorithm for determining CLANG_LIBRARY_PATH and finding c-picker
has been moved into UnitTest.cmake as unit_test_add_suite depends on
these parts of the code. By including UnitTest module the detection
code runs.

Change-Id: I3a9095ee3baaca84056a2a5df8c433a7d1d7b5cc
Signed-off-by: Imre Kis <imre.kis@arm.com>
2 files changed