rk3288: support tsadc

check the cpu and gpu temperature in romstage,
if over 120 degrees celsius,shut down the device.

BUG=None
Test=Boot on veyron_pinky rev2, write value
3421(125 celsius) to grf_tsadc_testbitl register,
the device will be shut down

Change-Id: I275d643ce8560444a9b42ee566d5fd63ebcda35e
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: e0c597489dc0637ffa66ee9db0c4f60757f8889f
Original-Change-Id: If406d6a4f6201150f52ea7fc64cd50b45778d7aa
Original-Signed-off-by: huang lin <hl@rock-chips.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/223259
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Commit-Queue: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/9348
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/google/veyron_pinky/romstage.c

@@ -35,6 +35,7 @@
 #include <soc/rockchip/rk3288/clock.h>
 #include <soc/rockchip/rk3288/pwm.h>
 #include <soc/rockchip/rk3288/grf.h>
+#include <soc/rockchip/rk3288/tsadc.h>
 #include <symbols.h>
 #include "timer.h"
 
@@ -86,6 +87,7 @@ void main(void)
 
 	console_init();
 	configure_l2ctlr();
+	tsadc_init();
 
 	/* vdd_log 1200mv is enough for ddr run 666Mhz */
 	regulate_vdd_log(1200);