Comment 0 for bug 1815415

This came up while working on bug 1755250 which asked for statx.
But on the review of that it was pointed out that it would be great to support further new kernel syscall defines - this isn't even looking at HWE kernels for Bionic, but "just" adding those which are there for the 4.15 kernel Bionic was released with.
With the HWE kernels in mind there would be even more one might want to add, but there is no newer such update in the upstream repo yet.