I am not sap so I don't know BUT,
You may do it yourself if you have enough time to hack.
SAP Released a tool called "Query migration tool from MSSQL to SAP HANA".
this tool use the ANTLR3 project and is in .Net. It is a stand-alone program.
I don't know how the entity framework works, but my guess is that it create compatible sql statement from operation done with linq on objects.
If you are able to extract the source using the .net Reflector, then convert the command-line sql convertion tool to a library, you could create the required entity framework class and generate the hana compatible sql without too much difficulties.
I got the program from the Streamwork project "SAP Business One, version for SAP HANA - Ramp-Up". There is probably other means to get it so you should ask your sap contact about it.