wcnss: Add API to expose the IRIS XO mode set

IRIS XO mode can be configured thru module parameter; and it can also
be auto detected. Add an API to expose the IRIS XO mode set. WLAN driver
can use this API for it's XO specific operation.

Change-Id: If40ae715f5e400e13a6fc9588d2bd144958ee8c2
Signed-off-by: Sameer Thalappil <sameert@codeaurora.org>
Signed-off-by: Iliyan Malchev <malchev@google.com>

Conflicts:
	include/linux/wcnss_wlan.h

Conflicts:
	drivers/net/wireless/wcnss/wcnss_wlan.c
	include/linux/wcnss_wlan.h
cfg80211: add flags to define country IE processing rules
cfg80211/nl80211: add API for MAC address ACLs
cfg80211: Extend support for IEEE 802.11r Fast BSS Transition
cfg80211: Pass station (extended) capability info to kernel
cfg80211: allow advertising VHT capabilities
cfg80211/nl80211: Peer STA VHT caps
cfg80211: Add TDLS event to allow drivers to request operations