feat(plat/mediatek/mt8186): add sys_cirq support

Add 8186 sys_cirq info.

TEST=build pass
BUG=b:202871018

Signed-off-by: Zhengnan Chen <zhengnan.chen@mediatek.corp-partner.google.com>
Change-Id: Ib8a1c4e995288bf5f7981ea65f27727715fe5787
diff --git a/plat/mediatek/mt8186/platform.mk b/plat/mediatek/mt8186/platform.mk
index d7f48bd..7fd9990 100644
--- a/plat/mediatek/mt8186/platform.mk
+++ b/plat/mediatek/mt8186/platform.mk
@@ -38,6 +38,7 @@
                 ${MTK_PLAT}/common/mtk_sip_svc.c                      \
                 ${MTK_PLAT}/common/params_setup.c                     \
                 ${MTK_PLAT}/common/drivers/timer/mt_timer.c           \
+                ${MTK_PLAT}/common/mtk_cirq.c           	      \
                 ${MTK_PLAT_SOC}/aarch64/platform_common.c             \
                 ${MTK_PLAT_SOC}/aarch64/plat_helpers.S                \
                 ${MTK_PLAT_SOC}/bl31_plat_setup.c                     \