google/panther: adjust critical temp

Set critical temp to match newer devices

Change-Id: I11f32297a9b8c9a3554821b5d1cd723d8d9e2b69
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: http://review.coreboot.org/6023
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

src/mainboard/google/panther/thermal.h

@@ -46,7 +46,7 @@
 #define FAN0_PWM		0xff
 
 /* Temperature which OS will shutdown at */
-#define CRITICAL_TEMPERATURE	100
+#define CRITICAL_TEMPERATURE	98
 
 /* Temperature which OS will throttle CPU */
 #define PASSIVE_TEMPERATURE	90