Revert "[cgain_core] Changed the sin/cos lookup to use distributed instead BRAM."

This reverts commit 9f26a8e81322bc560f3a9fbb9bbc27d5d06227b0. This changes causes
MAP global optimization to just completely stall. No idea why.
[cgain_core] Set sin/cos lookup to auto for both memory type and optimiation.
[cgain_core] Increased sin/cos latency by 2.