SD card images built with these patches generate the expected partition layouts:
`arm64/ROCKPRO64.conf`:
```
$ gpart show md0
=> 40 10485680 md0 GPT (5.0G)
40 32728 - free - (16M)
32768 102400 1 efi (50M)
135168 10350464 2 freebsd-ufs (4.9G)
10485632 88 - free - (44K)
```
`arm64/RPI.conf`:
```
$ gpart show md1
=> 63 10485697 md1 MBR (5.0G)
63 1985 - free - (993K)
2048 102400 1 fat32lba [active] (50M)
104448 10381312 2 freebsd (5.0G)
```
`riscv/GENERICSD.conf` (with D43849 applied):
```
$ gpart show md2
=> 40 12582832 md2 GPT (6.0G)
40 4056 - free - (2.0M)
4096 4096 1 hifive-fsbl (2.0M)
8192 8192 2 hifive-bbl (4.0M)
16384 110592 3 efi (54M)
126976 12455808 4 freebsd-ufs (5.9G)
12582784 88 - free - (44K)
```