cfg80211: use same IR permissive rules for 6GHz band

The function cfg80211_ir_permissive_chan() is applicable for
6GHz band as well so make sure it is handled.

Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Leon Zegers <leon.zegers@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Link: https://lore.kernel.org/r/1564745465-21234-7-git-send-email-arend.vanspriel@broadcom.com


Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Git-commit: 0816e6b1177adb4f120767434c67441c30de10d2
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git


Change-Id: I33357ab63abca47e918dc4711122142b9755567a
CRs-Fixed: 2536758
Signed-off-by: Liangwei Dong <liangwei@codeaurora.org>