[][kernel][mt7988][eth][Fix DMA init timeout in network-restart stress test]

Fix DMA init timeout in network-restart stress test :
1. Turn on the gmac forwarding when mkt_open is only halfway initialized
or  start deinit in mtk_close without forbid forwarding in gmac, this
can lead to unknown exceptions.
2. Update the init/deinit order in mtk_open/mtk_close.
3. Move the configure of gdm from mtk_mac_config to mtk_hw_init, avoid
asynchronous operations on gdm config.
4. Update related patches.


Change-Id: I80f594948b0c0ddc7eb34bb47e78e2ff74229f6a
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6728789
7 files changed