mediatek: mt8192: Add SPM suspend driver

Supports dram/mainpll/26m off when system suspend

Change-Id: Id13a06d4132f00fb60066de75920ecac18306e32
diff --git a/plat/mediatek/mt8192/bl31_plat_setup.c b/plat/mediatek/mt8192/bl31_plat_setup.c
index 9de4a2e..0040747 100644
--- a/plat/mediatek/mt8192/bl31_plat_setup.c
+++ b/plat/mediatek/mt8192/bl31_plat_setup.c
@@ -19,6 +19,7 @@
 #include <emi_mpu/emi_mpu.h>
 #include <gpio/mtgpio.h>
 #include <mt_gic_v3.h>
+#include <mt_spm.h>
 #include <mt_timer.h>
 #include <mtk_dcm.h>
 #include <plat_params.h>
@@ -100,6 +101,7 @@
 	plat_mt8192_gpio_init();
 	mt_systimer_init();
 	generic_delay_timer_init();
+	spm_boot_init();
 }
 
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