Use wcnss_node_write function to load riva firmware & preload nv.bin from userspace. Don't use wcnss_node_open, because it will triggered by "chown system system /dev/wcnss" in init.flo.rc Change-Id: I8aafd9dc57579c19e6580326e51fe1e468c262f9 Signed-off-by: andy2_kuo <andy2_kuo@asus.com> Signed-off-by: Iliyan Malchev <malchev@google.com>