glibc: define __NR_bpf am: d38e3ac65e

Original change: https://android-review.googlesource.com/c/platform/prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.17-4.8/+/1944206

Change-Id: I95a1b557679045f1162c810a607e533ad1defa6b