timing(LoadQueueRAR, LoadUnit): adjust rar/raw query logic

[cz4e]

• Because of LoadQueueRARSize == VirtualLoadQueueSize, so no need to add additional logic for rar enq
• When no need fast replay, loadunit allocate raw entry

[XiangShanRobot]

[Generated by IPC robot]
commit: ae30bc7

commit	astar	copy_and_run	coremark	gcc	gromacs	hmmer-Vector	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
ae30bc7	1.818	0.442	2.637	1.232	2.158	1.675	2.138	2.362	0.940	1.380	1.986	3.108	2.531	2.274	3.276

master branch:

commit	astar	copy_and_run	coremark	gcc	gromacs	hmmer-Vector	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
914bbc8						1.678			0.943						3.300
a94ed9a	1.819	0.442	2.634	1.231	2.144	1.678	2.145	2.364	0.943	1.380	1.998	3.101	2.547	2.272	3.300
99ce557	1.819	0.442	2.634	1.223	2.144	1.678	2.145	2.364	0.943	1.380	1.998	3.101	2.547	2.272	3.300
302eb94	1.819	0.442	2.634	1.215	2.144	1.678	2.145	2.364	0.943	1.380	1.998	3.101	2.547	2.272	3.300
48f7f55		0.442	2.634	1.228		1.678		2.364	0.943	1.380		3.101	2.547		3.300
7edcfc9	1.819	0.442	2.634	1.228	2.144	1.678	2.145	2.364	0.943	1.388	1.998	3.101	2.547	2.272	3.300
5a36f63	1.819	0.442	2.634	1.235	2.144	1.498	2.145	2.364	0.943	1.380	1.998	3.101	2.547	2.272	3.300
deb28c0	1.819	0.442	2.634	1.234	2.144	1.498	2.145	2.364	0.943	1.388	1.998	3.101	2.547	2.272	3.300
aad6182	1.819	0.442	2.634	1.232	2.144	1.498	2.145	2.364	0.943	1.388	1.998	3.101	2.547	2.272	3.300
075d493	1.819	0.442	2.634	1.232	2.144	1.498	2.145	2.364	0.943	1.380	1.998	3.101	2.547	2.272	3.300