Change in coreboot[master]: mb/google/volteer/var/volet: Update gpio and devicetree settings

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Nick Vaccaro, Sheng-Liang Pan, YH Lin.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/55113 )

Change subject: mb/google/volteer/var/volet: Update gpio and devicetree settings
......................................................................

Patch Set 2:

(3 comments)

File src/mainboard/google/volteer/variants/volet/overridetree.cb:

https://review.coreboot.org/c/coreboot/+/55113/comment/4afd1b00_eadcae1e 
PS2, Line 26: 				device i2c 1a on
            : 				end
nit:
`device i2c 1a on end`

https://review.coreboot.org/c/coreboot/+/55113/comment/d78ac3bb_11478475 
PS2, Line 44: 				device i2c 32 on
            : 				end
```
device i2c 32 on
end
```

https://review.coreboot.org/c/coreboot/+/55113/comment/50c9af5a_8a9090cb 
PS2, Line 112: 0x2c
Please be consistent with i2c address formats:
`2c`