[][MAC80211][mt76][fix typo name bersa to besra]

[Description]
Fix chip generation typo name bersa to besra.

[Release-log]
N/A

Change-Id: Ie0b3de50e3c7a9f379b3f48cbde448a59d7d51b1
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6152828
216 files changed