Use NLM_F_REQUEST_ACK in createGetLinkMessage()

This rtnl message is used with sendOneShotKernelMessage() which expects
that kernel returns an ACK. We need to set NLM_F_ACK explicitly for
that.

Bug: 379021505
Test: Manually run and no more exception with EAGAIN.
Change-Id: Iba21fedf60f5eca63eceee9362e252952bb805c1
2 files changed