NetlinkListener is used by Netd, so move it to frameworks/libs/net
and then it can be used by platform code and mainline module.
Bug: 209935649
Test: m; flash; boot
Change-Id: I4cf0e64eee1dda1e452d76af77642416c9729d42
libconn_for_netd.so in tethering module needs utilities in libnetdutils,
e.g. Status class.
Bug: 202086915
Test: m
Change-Id: Idb7f11d146570972f2467b7faa624f41bd859062
libnetdutils is referenced by netd.c and TrafficController.cpp, which
are going to be mainlined. Therefore, move libnetdutils to a common
place where both mainline module and platform code (Netd) can refer to.
Bug: 202086915
Test: build; flash; cd system/netd; atest
No-Typo-Check: Clean code move with no other changes.
BYPASS_INCLUSIVE_LANGUAGE_REASON=Clean code move with no other changes.
Merged-In: I645bfe35f6543149c9a9f894cd4158d27a481abe
Change-Id: I645bfe35f6543149c9a9f894cd4158d27a481abe