board: add new board, product and platform json files for avenger96
Vendor files can be used from https://gitlab.com/ric96/vendor_st
Signed-off-by: Sahaj Sarup sahaj.sarup@linaro.org
Vendor files can be used from https://gitlab.com/ric96/vendor_st
Signed-off-by: Sahaj Sarup sahaj.sarup@linaro.org