core/refresher: use A10=1 for all banks REF

This is needed because newer DRAMs like LPDDR4 or DDR5 have
separate commands for per-bank refresh and all banks refresh.
Other DRAM types ignore address for REF commands.

litedram/core/refresher.py

@@ -50,7 +50,7 @@ class RefreshExecuter(Module):
                 ]),
                 # Auto Refresh after tRP
                 (trp, [
-                    cmd.a.eq(  0),
+                    cmd.a.eq(  2**10),  # all banks in LPDDR4/DDR5, ignored in other memories
                     cmd.ba.eq( 0),
                     cmd.cas.eq(1),
                     cmd.ras.eq(1),