Adding OpenWrt support for Xiaomi AX3600 (Part 1)

For Developers
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Just saw that Blocktrron had pushed an updated qca-nss ssdk v11.4-csu1 and a ath11k firmware
WLAN.HK.2.5.0.1-01192-QCAHKSWPL_SILICONZ-1 v2 over at: