net: wireless: bcmdhd: Fixed Coverity issue.

Signed-off-by: Ecco Park <eccopark@broadcom.com>

Conflicts:
	drivers/net/wireless/bcmdhd/dhd_pno.c
net: wireless: bcmdhd: fix for negative padding

Signed-off-by: Iliyan Malchev <malchev@google.com>

Conflicts:
	drivers/net/wireless/bcmdhd/bcmsdh_sdmmc.c