submodule(CoupledL2): Fix DataStorage en signal

[Ivyfeather]

In previous design, task_s3_valid_hold2(1) will change during the two cycles,
so it is inproper to use task_s3_valid_hold2.orR as req_valid.
Instead, we just use (0) as req_valid, which is guaranteed to keep unchanged.

[XiangShanRobot]

[Generated by IPC robot]
commit: f351a10

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
f351a10	1.934	0.451	2.704	1.194	2.812	2.465	2.403	0.913	1.401	1.626	3.421	2.743	2.429	3.271

master branch:

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
97e37a2	1.934	0.451	2.704	1.194	2.812	2.465	2.402	0.913	1.401	1.626	3.415	2.743	2.429	3.271
d275ad0	1.934	0.451	2.704	1.194	2.812	2.465	2.401	0.913	1.401	1.626	3.421	2.743	2.429	3.271
979d98a		0.451	2.704				2.400	0.913	1.401			2.743
7543e8e	1.934	0.451	2.704	1.194	2.812	2.465	2.400	0.913	1.401	1.626	3.415	2.743	2.429	3.271
46e9ee7	1.934	0.451	2.704	1.194	2.812	2.465	2.400	0.913	1.401	1.626	3.421	2.743	2.429	3.271
bbaa6b7	1.934	0.451	2.704	1.194	2.812	2.465	2.400	0.913	1.401	1.626	3.421	2.743	2.429	3.271
4446722	1.934	0.451	2.704	1.194	2.812	2.465	2.402	0.913	1.401	1.626	3.421	2.743	2.429	3.271
e2216ec	1.934	0.451	2.704	1.194	2.812	2.465	2.400	0.913	1.401	1.626	3.415	2.743	2.429	3.271
65b2b1e	1.934	0.451	2.704	1.194	2.812	2.465	2.400	0.913	1.401	1.626	3.415	2.743	2.429	3.271

[Ivyfeather]

Updated by a later bump of CPL2