Fixed CMake build by adding hidapi files

This needs more work to remove the hidapi shared library build, but at least Linux builds are unblocked

CMakeLists.txt

@@ -442,6 +442,7 @@ file(GLOB SOURCE_FILES
   ${SDL2_SOURCE_DIR}/src/events/*.c
   ${SDL2_SOURCE_DIR}/src/file/*.c
   ${SDL2_SOURCE_DIR}/src/haptic/*.c
+  ${SDL2_SOURCE_DIR}/src/hidapi/*.c
   ${SDL2_SOURCE_DIR}/src/libm/*.c
   ${SDL2_SOURCE_DIR}/src/locale/*.c
   ${SDL2_SOURCE_DIR}/src/misc/*.c