building.md: update cmake instructions
building.md: update cmake instructions

Signed-off-by: Brendan Le Foll <3e0e8c4069934e8b47d99704927a85c66c0ceb33@intel.com>

Propanu/upm,malikabhi05/upm,ShawnHymel/upm,pylbert/upm,skiselev/upm,GSmurf/upm,0xD34D/upm,jontrulson/upm,srware/upm,MakerCollider/upm,skiselev/upm,g-vidal/upm,tripzero/upm,stefan-andritoiu/upm,intel-iot-devkit/upm,intel-iot-devkit/upm,arfoll/upm,pylbert/upm,whbruce/upm,fieldhawker/upm,afmckinney/upm,Vaghesh/upm,kissbac/upm,fieldhawker/upm,mircea/upm,whbruce/upm,stefan-andritoiu/upm,rafaneri/upm,0xD34D/upm,mircea/upm,andreivasiliu2211/upm,g-vidal/upm,mircea/upm,rafaneri/upm,fieldhawker/upm,noahchense/upm,Propanu/upm,MakerCollider/upm,pylbert/upm,skiselev/upm,tylergibson/upm,noahchense/upm,0xD34D/upm,tripzero/upm,whbruce/upm,yoyojacky/upm,g-vidal/upm,tylergibson/upm,arfoll/upm,spitfire88/upm,malikabhi05/upm,nitirohilla/upm,spitfire88/upm,nitirohilla/upm,tylergibson/upm,mircea/upm,spitfire88/upm,tylergibson/upm,g-vidal/upm,kissbac/upm,nitirohilla/upm,fieldhawker/upm,kissbac/upm,Vaghesh/upm,g-vidal/upm,srware/upm,MakerCollider/upm,intel-iot-devkit/upm,sasmita/upm,spitfire88/upm,Propanu/upm,MakerCollider/upm,malikabhi05/upm,srware/upm,yoyojacky/upm,intel-iot-devkit/upm,kissbac/upm,afmckinney/upm,arfoll/upm,andreivasiliu2211/upm,Jon-ICS/upm,nitirohilla/upm,jontrulson/upm,nitirohilla/upm,stefan-andritoiu/upm,Jon-ICS/upm,srware/upm,intel-iot-devkit/upm,stefan-andritoiu/upm,afmckinney/upm,tripzero/upm,spitfire88/upm,skiselev/upm,sasmita/upm,andreivasiliu2211/upm,GSmurf/upm,skiselev/upm,jontrulson/upm,Jon-ICS/upm,sasmita/upm,tylergibson/upm,afmckinney/upm,pylbert/upm,noahchense/upm,rafaneri/upm,pylbert/upm,arfoll/upm,rafaneri/upm,rafaneri/upm,ShawnHymel/upm,jontrulson/upm,Vaghesh/upm,sasmita/upm,kissbac/upm,skiselev/upm,whbruce/upm,MakerCollider/upm,tripzero/upm,pylbert/upm,andreivasiliu2211/upm,izard/upm,ShawnHymel/upm,tripzero/upm,GSmurf/upm,izard/upm,Propanu/upm,Jon-ICS/upm,noahchense/upm,g-vidal/upm,sasmita/upm,malikabhi05/upm,izard/upm,afmckinney/upm,mircea/upm,whbruce/upm,srware/upm,arfoll/upm,ShawnHymel/upm,stefan-andritoiu/upm,intel-iot-devkit/upm,andreivasiliu2211/upm,Vaghesh/upm,malikabhi05/upm,stefan-andritoiu/upm,jontrulson/upm,yoyojacky/upm,Propanu/upm,ShawnHymel/upm,GSmurf/upm,yoyojacky/upm,Propanu/upm,Jon-ICS/upm,malikabhi05/upm,0xD34D/upm,yoyojacky/upm