ice40: Spread RAM pins across the 2 tiles
ice40: Spread RAM pins across the 2 tiles

Signed-off-by: Jeffrey Elms <23ce84ca7a7de9dc17ad8e8b0bbd717d4f9f9884@freshred.net>
Signed-off-by: Tim 'mithro' Ansell <b1c1d8736f20db3fb6c1c66bb1455ed43909f0d8@mith.ro>

SymbiFlow/symbiflow-rr-graph