Bug#1005733: g++-11 internal compiler error when building onetbb on riscv64

[Matthias Klose <doko@debian.org>]

Control: reassign -1 src:onetbb
Control: retitle -1 onetbb ftbfs on riscv64

this isn't reproducible at the moment. The build now fails with:

In file included from /<<PKGBUILDDIR>>/src/tbb/tools_api/ittnotify_static.c:17,

                 from /<<PKGBUILDDIR>>/src/tbb/itt_notify.cpp:43:

/<<PKGBUILDDIR>>/src/tbb/tools_api/ittnotify_config.h: In function ‘long int 
__itt_interlocked_increment(volatile long int*)’:

/<<PKGBUILDDIR>>/src/tbb/tools_api/ittnotify_config.h:360:12: error: 
‘__TBB_machine_fetchadd4’ was not declared in this scope

  360 |     return __TBB_machine_fetchadd4(ptr, 1) + 1L;

      |            ^~~~~~~~~~~~~~~~~~~~~~~

compilation terminated due to -Wfatal-errors.