feat(plat/mediatek/mt8186): add pwrap and pmic driver

1. Add 8186 pwrap driver to access pmic.
2. Add 6366 pmic driver to support clean PWRHOLD.

TEST=build pass
BUG=b:202871018

Signed-off-by: James Lo <james.lo@mediatek.corp-partner.google.com>
Change-Id: I3bc90460a6a55dff8d3293e04482abcad789bbb2
diff --git a/plat/mediatek/mt8186/plat_pm.c b/plat/mediatek/mt8186/plat_pm.c
index 61d2cc9..6e3ab37 100644
--- a/plat/mediatek/mt8186/plat_pm.c
+++ b/plat/mediatek/mt8186/plat_pm.c
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
+#include <common/debug.h>
 #include <lib/psci/psci.h>
 
 static const plat_psci_ops_t plat_psci_ops = {