Cmake mc

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

The config_qurt_eagle_travis.cmake target is for CI

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

cmake: Added dspal and eigen32 to top level CMakeLists.txt

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

Relying on inclusion of git_eigen32 and git_dspal targets to trigger
the submodule init and update

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

cmake: fixes for qurt build after refactoring

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

cmake: changes required for qurt build

Fixed CMakeLists.txt to be consistent with module.mk
Converted PX4_TICKS_PER_SEC to define for QURT to get around relocation error
Added stubs for QURT so building a full executable can be tested. This will
enable CI testing without the full Hexagon SDK.

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

cmake: added support for topic_listener.cpp

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

qurt: Updated the version of dspal headers

qurt: Updated dspal version

Added missing extern "C" blocks

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

Signed-off-by: Mark Charlebois <charlebm@gmail.com>