Simplified CMakeLists.txt by using list(APPEND..)
Simplified CMakeLists.txt by using list(APPEND..)

Signed-off-by: Matej Kenda <3de0fc7ef9c03be15263abb9191aa80368f92562@gmail.com>

analogdevicesinc/libiio,analogdevicesinc/libiio,analogdevicesinc/libiio,analogdevicesinc/libiio