[prim] Select proper generic implementation in prim_ram_2p_async_adv
[prim] Select proper generic implementation in prim_ram_2p_async_adv

Signed-off-by: Stefan Lippuner <327e967db72ec2cf4c8010a51c4fcd7c9fe8c66f@iis.ee.ethz.ch>

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan