Further relax the target temperatures on hfa driver, targetting 88 degrees.
diff --git a/driver-hashfast.h b/driver-hashfast.h
index 8465f70..4aaf5ba 100644
--- a/driver-hashfast.h
+++ b/driver-hashfast.h
@@ -29,8 +29,8 @@ int opt_hfa_fan_min;
#define HASHFAST_MINER_THREADS 1
#define HFA_CLOCK_DEFAULT 550
#define HFA_CLOCK_MIN 125
-#define HFA_TEMP_OVERHEAT 90
-#define HFA_TEMP_TARGET 85
+#define HFA_TEMP_OVERHEAT 95
+#define HFA_TEMP_TARGET 88
#define HFA_TEMP_HYSTERESIS 3
#define HFA_FAN_DEFAULT 33
#define HFA_FAN_MAX 85