staging: brcm80211: brcmfmac: replace KILL_PROC with send_sig()

logic optimization : replace KILL_PROC with send_sig()

Signed-off-by: Nohee Ko <noheek@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --cc drivers/staging/brcm80211/brcmfmac/dhd_linux.c
Simple merge

diff --cc drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c
Simple merge

diff --cc drivers/staging/brcm80211/brcmfmac/wl_iw.c
Simple merge

diff --cc drivers/staging/brcm80211/include/linuxver.h
Simple merge