Tage1 align (#615)

* cpu-o3: align TAGE, use positon ^ tag for tag compare

now use position in 64byte, not sure use pos in 32byte？

Change-Id: Ie7f900e62d78859062c52f847ef6acf1c1392c1c

* cpu-o3: refactor tage allocate, add more comments

Change-Id: Iadf61c6e576840640a679c4136ce2c318129b6c2

* cpu-o3: tage: add basic bank confict

perf should decrease

* cpu-o3: tage: add bank conflict toggle and fine-grained stats

Add enableBankConflict parameter to control bank conflict simulation:
- Default: enabled for production, disabled for unit tests
- Prevents existing unit tests from breaking

Add fine-grained per-bank statistics (non-UNIT_TEST only):
- updateBankConflictPerBank: conflict count per bank
- updateAccessPerBank: update access count per bank
- predAccessPerBank: prediction access count per bank

Add comprehensive bank conflict unit test:
- Test 1: Same bank conflict detection (enabled)
- Test 2: Different bank no conflict
- Test 3: Disabled flag prevents conflict

Fix existing SetAssociativeConflictHandling test:
- Bug: entries with different positions used same tag
- Root cause: tag calculation includes position XOR (aligned with RTL in 3a23ab4)
- Fix: calculate separate tags for each position

Change-Id: I18f666274a77b11f8cc28f9ed5c0db2806e81d19

* cpu-o3: enableBankConflict = false as Default

about 0.3 score
waiting for better implement

Change-Id: Iba0f6e51e6a364fa65b2b794539b740aade0fe28

* cpu-o3: fix bug: when enableBankConflict=False, get right index

Change-Id: I27a1c24747ab22d96a2ab7fe637563215ca93a53

Author: jensen-yan