* gromacs +cp2k: build in CI
* libxsmm: x86 only
* attempt to fix dbcsr + new mpich
* use c11 standard
* gromacs: does not depend on dbcsr
* cp2k: build with cmake in CI, s.t. dbcsr is a separate package
* cp2k: cmake patches for config files and C/C++ std
* cp2k: remove unnecessary constraints due to patch