Merge "Generate static-syms.h at build time." am: 494234160c

Original change: https://android-review.googlesource.com/c/platform/external/iproute2/+/2468220

Change-Id: I128645125605b0d894a17d67fcf0ee4b72c306b5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>