cnss2: Add GENL support for WLAN platform driver

Add generic netlink communication between cnss-daemon and WLAN
platform driver. The new netlink socket will be used to pass
QDSS debug data from platform driver to user-space daemon.

CRs-Fixed: 2374779
Change-Id: I6d7943f1fb7fd782d9c53955c13d8f244ffc8a52
Signed-off-by: Yuanyuan Liu <yuanliu@codeaurora.org>