Integrate linux-imx-kuk/fix_mx8mp_vlan

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Commit: seco-ne/kernel/linux-imx-kuk@23b50d6e

driver:dwmac: Removed failing check for VLAN promisc mode

The commit is a workaround to re-allow the internal mac to be added to a
software bridge.

Also see https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/
Workaround-for-issue-Bridge-mode-on-EQoS-module-will-not-work/ta-p/1559302

BCS 746-001292