submodule(rocket-chip): bump rocket-chip

[TheKiteRunner24]

including:

1. feat(CMO): expand channel opcode bits for CMO features
2. fix(RVCDecoder): Identify incorrect c.sh instructions
3. fix(RVCDecoder): c.addi4spn with imm=0 should be reserved

[XiangShanRobot]

[Generated by IPC robot]
commit: 79f9d08

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
79f9d08	1.917	0.450	2.701	1.238	2.891	2.473	2.398	0.915	1.429	1.700	3.470	2.729	2.417	3.280

master branch:

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
4376b52		0.450	2.701				2.398		1.429			2.729
68838bf	1.920	0.450	2.701	1.234	2.891	2.473	2.398	0.915	1.429	1.700	3.470	2.729	2.417	3.280
8e8c863	1.937	0.450	2.701	1.248	2.891	2.460	2.400	0.919	1.431	1.685	3.488	2.736	2.418	3.290
521bb21
dd16cea	1.925	0.451	2.701	1.239	2.893	2.460	2.400	0.921	1.428	1.659	3.477	2.733	2.414	3.279