libwifi: brcm: Handle country code E0 as DE.
The new 6715X chipset don't report DE in its countrylist so for these chipsets we need to map E0 to DE to make sure the backend (i.e. 'iwinfo') works as expected when 'DE' is used.
The new 6715X chipset don't report DE in its countrylist so for these chipsets we need to map E0 to DE to make sure the backend (i.e. 'iwinfo') works as expected when 'DE' is used.