[prim] Select proper generic implementation in prim_ram_2p_async_adv

Signed-off-by: Stefan Lippuner <lstefan@iis.ee.ethz.ch>
diff --git a/hw/ip/prim/rtl/prim_ram_2p_async_adv.sv b/hw/ip/prim/rtl/prim_ram_2p_async_adv.sv
index c62c662..fb4be9e 100644
--- a/hw/ip/prim/rtl/prim_ram_2p_async_adv.sv
+++ b/hw/ip/prim/rtl/prim_ram_2p_async_adv.sv
@@ -86,7 +86,7 @@
     prim_ram_2p #(
       .Width (TotalWidth),
       .Depth (Depth),
-      .Impl  ("generic")
+      .Impl  (prim_pkg::ImplGeneric)
     ) u_mem (
       .clk_a_i    (clk_a_i),
       .clk_b_i    (clk_b_i),