Change in coreboot[master]: driver/i2c/max98390: Add vmon_slot_no/imon_slot_no property

[Keith Tzeng (Code Review)]

Attention is currently required from: Chen Wisley, Tim Wawrzynczak, Paul Menzel.
Keith Tzeng has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/57671 )

Change subject: driver/i2c/max98390: Add vmon_slot_no/imon_slot_no property
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Patch Set 2:

(1 comment)

File src/drivers/i2c/max98390/max98390.c:

https://review.coreboot.org/c/coreboot/+/57671/comment/a8b959ac_85189987 
PS1, Line 82: 	if (!dp)
            : 		dp = acpi_dp_new_table("_DSD");
            : 
            : 	acpi_dp_add_integer(dp, "maxim,vmon-slot-no", config->vmon_slot_no);
            : 	acpi_dp_add_integer(dp, "maxim,imon-slot-no", config->imon_slot_no);
> from the driver: […]

We seems no need to have 'if (config->vmon_slot_no)', '(config->imon_slot_no)',
In case of the function needed, need to report vmon-slot-no, imon-slot-no.
in case of not using the function, it doesn't matter to have default reported.