[XS] Change in coreboot[main]: mb/google/rauru: Add DVFS support in romstage

[Yidi Lin (Code Review)]

Yidi Lin has submitted this change. ( https://review.coreboot.org/c/coreboot/+/86042?usp=email )

Change subject: mb/google/rauru: Add DVFS support in romstage
......................................................................

mb/google/rauru: Add DVFS support in romstage

BUG=b:317009620
TEST=Build passed, boot successful. Verified that the available CPU
frequency ranges are correct using the command:
cat /sys/devices/system/cpu/cpufreq/policy*/scaling_available_frequencies

Change-Id: I6f290946365b4c5a650651ebea30ffc76583d2b2
Signed-off-by: Jarried Lin 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86042
Reviewed-by: Yidi Lin 
Tested-by: build bot (Jenkins) 
Reviewed-by: Yu-Ping Wu 
---
M src/mainboard/google/rauru/romstage.c
1 file changed, 2 insertions(+), 0 deletions(-)

Approvals:
  Yidi Lin: Looks good to me, approved
  Yu-Ping Wu: Looks good to me, approved
  build bot (Jenkins): Verified

diff --git a/src/mainboard/google/rauru/romstage.c b/src/mainboard/google/rauru/romstage.c
index 876a748..c48c9e2 100644
--- a/src/mainboard/google/rauru/romstage.c
+++ b/src/mainboard/google/rauru/romstage.c
@@ -2,6 +2,7 @@

#include <arch/stages.h>
 #include <soc/clkbuf_ctl.h>
+#include <soc/dvfs.h>
 #include <soc/emi.h>
 #include <soc/irq2axi.h>
 #include <soc/modem_power_ctrl.h>
@@ -43,6 +44,7 @@
    clk_buf_init();
    mtk_dram_init();
    modem_power_down();
+	dvfs_init();
    thermal_init();

if (CONFIG(PCI))