driver/i2c/max98927: Add imon and vmon params

This change list adds imon and vmon slot numbers as params for
Maxim 98927 driver. These values are looked up in the kernel driver
to confiure IV feedback for audio playback on speakers.

BUG=b:36724448
TEST=After boot, the register dump for  Max98927 codecs should have
imon and vmon slots numbers set in 0x1e register.

Change-Id: I21d72ba91af83782587f11018b2d1d1c8d4f676c
Signed-off-by: Harsha Priya <harshapriya.n@intel.com>
Reviewed-on: https://review.coreboot.org/21195
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
diff --git a/src/drivers/i2c/max98927/max98927.c b/src/drivers/i2c/max98927/max98927.c
index 976c2f2..e9fc00d 100644
--- a/src/drivers/i2c/max98927/max98927.c
+++ b/src/drivers/i2c/max98927/max98927.c
@@ -61,6 +61,8 @@
 	dp = acpi_dp_new_table("_DSD");
 
 	acpi_dp_add_integer(dp, "interleave_mode", config->interleave_mode);
+	acpi_dp_add_integer(dp, "vmon-slot-no", config->vmon_slot_no);
+	acpi_dp_add_integer(dp, "imon-slot-no", config->imon_slot_no);
 
 	acpi_dp_write(dp);