Boot Keystone based on VCU118

[pig-pig-yang]

`INIT
CMD0
CMD8
ACMD41
CMD58
CMD16
CMD18
LOADING 0x01e00000B PAYLOAD
LOADING
BOOT

OpenSBI v0.8

---

/ __ \ / | _ _ |
| | | | __ ___ _ __ | ( | |) || |
| | | | '_ \ / _ \ '_ \ ___ | _ < | |
| || | |) | __/ | | |) | |) || |
_/| ./ _|| ||/|____/|
| |
|_|

Platform Name : freechips,rocketchip-unknown
Platform Features : timer,mfdeleg
Platform HART Count : 1
Firmware Base : 0x80000000
Firmware Size : 200 KB
Runtime SBI Version : 0.2

Domain0 Name : root
Domain0 Boot HART : 0
Domain0 HARTs : 0*
Domain0 Region00 : 0x0000000080000000-0x000000008003ffff ()
Domain0 Region01 : 0x0000000000000000-0xffffffffffffffff (R,W,X)
Domain0 Next Address : 0x0000000080200000
Domain0 Next Arg1 : 0x0000000082b00000
Domain0 Next Mode : S-mode
Domain0 SysReset : yes

[SM] Initializing ... hart [0]
[SM] Keystone security monitor has been initialized!
Boot HART ID : 0
Boot HART Domain : root
Boot HART ISA : rv64imafdcsux
Boot HART Features : scounteren,mcounteren
Boot HART PMP Count : 16
Boot HART PMP Granularity : 4
Boot HART PMP Address Bits: 30
Boot HART MHPM Count : 0
Boot HART MHPM Count : 0
Boot HART MIDELEG : 0x0000000000000222
Boot HART MEDELEG : 0x000000000000b109
`
SoC -> Chipyard, Core -> SonicBoom, img build -> firemarshal-keystone.
This program stop here, qemu and palladium z1 can boot it