Major backport of upstream patch for support of multiple feature of the
Airoha Ethernet driver.
Feature backported are TSO, Jumbo packet, Offload and initial Wlan
Offload support.
Link: https://github.com/openwrt/openwrt/pull/19816
(cherry picked from commit 9d3009f426)
[ add missing kconfig flag ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
