Change in coreboot[master]: mb/google/volteer: Update drobit device tree

[Tim Wawrzynczak (Code Review)]

Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/48495 )

Change subject: mb/google/volteer: Update drobit device tree
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Patch Set 4: Code-Review+1

(2 comments)

https://review.coreboot.org/c/coreboot/+/48495/1/src/mainboard/google/voltee... 
File src/mainboard/google/volteer/variants/drobit/overridetree.cb:

https://review.coreboot.org/c/coreboot/+/48495/1/src/mainboard/google/voltee... 
PS1, Line 23: 
recommend you add the `common_soc_config` section here too, e.g.:
```
        register "common_soc_config" = "{
                .chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT,
                .gspi[0] = {
                        .speed_mhz = 1,
                        .early_init = 1,
                },
                .i2c[0] = {
                        .speed = I2C_SPEED_FAST,
                },
                .i2c[1] = {
                        .speed = I2C_SPEED_FAST,
                },
                .i2c[5] = {
                        .speed = I2C_SPEED_FAST,
                },
       }
```

https://review.coreboot.org/c/coreboot/+/48495/1/src/mainboard/google/voltee... 
PS1, Line 136: ELAN2701
Just checking, Delbin uses `ELAN0000` here, is this a different controller?