volteer: enable CONFIG_DPTF
volteer: enable CONFIG_DPTF

this enables the handling of DPTF messages from the AP.

BRANCH=none
BUG=b:149722146,b:143768086
TEST=the EC no longer complains about ACPI write of 0x05, 0x06, 0x07.
	when we enabled DPTF on the AP side, we started getting
	unexpected messages on the EC:

	[24.693238 ACPI write 0x05 = 0x00 (ignored)]
	[24.694214 ACPI write 0x06 = 0x73 (ignored)]
	[24.695011 ACPI write 0x07 = 0x03 (ignored)]

	which correspond to:

	#define EC_ACPI_MEM_TEMP_ID            0x05
	#define EC_ACPI_MEM_TEMP_THRESHOLD     0x06
	#define EC_ACPI_MEM_TEMP_COMMIT        0x07

Change-Id: I29f21001e68ead0cf5d22dde692f73e830b65ba7
Signed-off-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2211842
Reviewed-by: Sumeet R Pawnikar <8a166f127db24fe02eee6e5e7b86af62c4ae4784@intel.com>
Reviewed-by: Keith Short <f6d578f97033c25f1206cb57d52f358974c82954@chromium.org>
Reviewed-by: Nick Vaccaro <d7b7f639f621b3ed89d9b581ffecdb610b635a33@google.com>
Commit-Queue: Keith Short <f6d578f97033c25f1206cb57d52f358974c82954@chromium.org>
Tested-by: Keith Short <f6d578f97033c25f1206cb57d52f358974c82954@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec