drivers: dac: mcp4728: fix indentation of the help section

The help section must start with 2 spaces so let's
add them.

Signed-off-by: Bartosz Bilas <b.bilas@grinn-global.com>
This commit is contained in:
Bartosz Bilas 2022-07-12 17:01:00 +02:00 committed by Fabio Baltieri
commit 819079a2c6