baytrail: Add SOC thermal settings

Apply the SOC thermal settings from DPTF reference code for
SdpProfile=4 and adjust graphics PUNIT setting to match.

BUG=chrome-os-partner:17279
BRANCH=baytrail
TEST=boot on rambi and check for valid GPU power values from DPTF

Change-Id: I59fc4b75b52084ebcc4c0556563afca0585ea6b8
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/182786
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/5052
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/soc/intel/baytrail/Makefile.inc

@@ -44,6 +44,7 @@ ramstage-y += emmc.c
 ramstage-y += lpss.c
 ramstage-y += pcie.c
 ramstage-y += sd.c
+ramstage-y += dptf.c
 ramstage-y += perf_power.c
 ramstage-y += stage_cache.c
 romstage-y += stage_cache.c