anv: Don't add dynamic state base address to push constants on Gen7
Because Gen7 push constants are already relative to dynamic state base address, they aren't really an address. It's deceptive to return an address from the helper function. Instead, let's leave it as a special-case in the gen7-11 helper; we don't need the helper for code de-duplication for Gen7 anyway.
Fixes: 67d2cb3e "anv: Add get_push_range_address() helper" Closes: #2323 (closed)