feat(mt8186): add Vcore DVFS driver

Add Vcore DVFS to SPM driver.

TEST=build pass
BUG=b:202871018

Change-Id: I52b241b2cdb792be74390cbaa09a728ddbe6593a
diff --git a/plat/mediatek/mt8186/drivers/spm/mt_spm_conservation.c b/plat/mediatek/mt8186/drivers/spm/mt_spm_conservation.c
index 0f8dfe8..a6ea977 100644
--- a/plat/mediatek/mt8186/drivers/spm/mt_spm_conservation.c
+++ b/plat/mediatek/mt8186/drivers/spm/mt_spm_conservation.c
@@ -12,6 +12,7 @@
 #include <mt_spm_internal.h>
 #include <mt_spm_reg.h>
 #include <mt_spm_resource_req.h>
+#include <mt_spm_vcorefs.h>
 #include <plat_mtk_lpm.h>
 #include <plat_pm.h>
 #include <platform_def.h>
@@ -34,7 +35,7 @@
 	__spm_set_cpu_status(cpu);
 	__spm_set_power_control(pwrctrl);
 	__spm_set_wakeup_event(pwrctrl);
-
+	__spm_sync_vcore_dvfs_power_control(pwrctrl, __spm_vcorefs.pwrctrl);
 	__spm_set_pcm_flags(pwrctrl);
 
 	__spm_src_req_update(pwrctrl, resource_req);