ath: Add regulatory mapping for FCC3_ETSIC

BugLink: https://bugs.launchpad.net/bugs/1791953

[ Upstream commit 01fb2994 ]

The regdomain code is used to select the correct the correct conformance
test limits (CTL) for a country. If the regdomain code isn't available and
it is still programmed in the EEPROM then it will cause an error and stop
the initialization with:

  Invalid EEPROM contents

The current CTL mappings for this regdomain code are:

* 2.4GHz: ETSI
* 5GHz: FCC
Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

drivers/net/wireless/ath/regd_common.h

@@ -35,6 +35,7 @@ enum EnumRd {
 	FRANCE_RES = 0x31,
 	FCC3_FCCA = 0x3A,
 	FCC3_WORLD = 0x3B,
+	FCC3_ETSIC = 0x3F,
 
 	ETSI1_WORLD = 0x37,
 	ETSI3_ETSIA = 0x32,
@@ -168,6 +169,7 @@ static struct reg_dmn_pair_mapping regDomainPairs[] = {
 	{FCC2_ETSIC, CTL_FCC, CTL_ETSI},
 	{FCC3_FCCA, CTL_FCC, CTL_FCC},
 	{FCC3_WORLD, CTL_FCC, CTL_ETSI},
+	{FCC3_ETSIC, CTL_FCC, CTL_ETSI},
 	{FCC4_FCCA, CTL_FCC, CTL_FCC},
 	{FCC5_FCCA, CTL_FCC, CTL_FCC},
 	{FCC6_FCCA, CTL_FCC, CTL_FCC},