Using -DCMAKE_BUILD_TYPE=MinSizeRel result in finally building with -Os. Our default
optimization or '+speed' are ignored, behavior is like always using '+size'.
Changing to default -DCMAKE_BUILD_TYPE="" is not allowed by to many packages including
Kodi, they are forcing a default option (in worst case "Debug", e.g. llvm)
Redefine the cmake parameters to not include any options and do the same for host choosing
"Release" as build type.
5789d3dff9