LLPTW, RVH: fix the mem_resp_hit when the new req's status is changed to last_hptw_req

[pxk27]

When the req is sent into LLPTW and its status need to be changed to last_hptw_req, the mem_resp_hit is not valid. It make L2TLB don't store the pte of the req. That is why L2TLB resp a wrong stage 1 pte. So the mem_resp_hit need to be valid when the new req's status is changed into last_hptw_req directly.

[XiangShanRobot]

[Generated by IPC robot]
commit: b69e21e

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
b69e21e	1.854	0.450	2.103	1.190	2.468	2.593	2.330	0.960	1.377	1.427	3.123	2.639	2.451	2.960

master branch:

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
0c70648	1.854		2.103	1.190	2.468	2.593		0.960	1.377	1.427	3.123		2.451	2.960
b628978	1.854		2.103	1.190	2.468	2.593	2.329	0.960	1.377	1.427	3.123		2.451	2.960
5e237ba			2.103				2.328		1.377
363530d	1.841			1.190	2.478	2.597		0.961		1.391	3.126		2.452	2.959
a72b131
05d833a	1.854	0.450	2.103	1.190	2.468	2.593	2.330	0.961	1.377	1.427	3.123	2.639	2.451	2.960
9cb05b4		0.450	2.103				2.330		1.377			2.639
4daa5bf		0.450	2.103	1.190	2.468	2.593	2.329	0.962	1.377	1.427	3.123	2.639		2.960
1e018fb	1.854	0.450	2.103	1.190	2.468	2.593	2.330	0.962	1.377	1.427	3.123	2.639	2.451	2.960
3c71816	1.854	0.450	2.103	1.190	2.468	2.593	2.330	0.962	1.377	1.427	3.123	2.639	2.451	2.960