mac802154: add support for perm_extended_addr

This patch adding support for a perm extended address. This is useful
when a device supports an eeprom with a programmed static extended address.
If a device doesn't support such eeprom or serial registers then the
driver should generate a random extended address.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

include/net/cfg802154.h

@@ -57,6 +57,8 @@ struct wpan_phy {
 	u8 csma_retries;
 	s8 frame_retries;
 
+	__le64 perm_extended_addr;
+
 	bool lbt;
 	s32 cca_ed_level;