drm/nouveau/therm: rework thermal table parsing

As an accident, it should also fix temperature reading on nv4x.

v2: introduce nvbios_therm_entry as advised by darktama

Signed-off-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_pm.h

@@ -148,7 +148,6 @@ struct nouveau_pm_temp_sensor_constants {
 struct nouveau_pm_threshold_temp {
 	s16 critical;
 	s16 down_clock;
-	s16 fan_boost;
 };
 
 struct nouveau_pm_fan {