Fixed packaging for 64bit architectures

Fixed packaging for 64bit architectures

The package has a hardcoded paths to libdir in CMakeLists.txt file which works
for 32-bit architectures, but trying to build package on aarch64 makes a problem
in packaging section because %{_libdir} macros has "/usr/lib64" on 64bit
architectures.

Now CMake uses paths defined by build system: it changes nothing for 32bit
architecture but packaging won't fail for 64bit builds anymore

Change-Id: I2a0fc1da429585a7bd1c0bffb0c8b5f50eab9b8e
Signed-off-by: Vyacheslav Barinov <v.barinov@samsung.com>