[Mellanox] Update SDK to 4.4.2112, FW to *.2008.2112, SAI to 1.18.0#6154

nazariig wants to merge 2 commits intosonic-net:mastersonic-net/sonic-buildimage:masterfrom

nazariig:master-sdk.4.4.2112nazariig/sonic-buildimage:master-sdk.4.4.2112Copy head branch name to clipboard