cmake.bbclass: set the modules directory correctly
The CMake recipes contain a mismatch between the environmental variable
which defines where the Modules are installed and the location where they
actually are. This patch fixes the environmental variable to point to the
proper folder defined according to the cmake version.
Signed-off-by: Jose Pardeiro <jpardeiro@rapyuta-robotics.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
