powctl: implement client api (needs board-specific impl)

libraries/libvapours/include/vapours/results.hpp

@@ -46,6 +46,7 @@
 #include <vapours/results/pcv_results.hpp>
 #include <vapours/results/pgl_results.hpp>
 #include <vapours/results/pm_results.hpp>
+#include <vapours/results/powctl_results.hpp>
 #include <vapours/results/psc_results.hpp>
 #include <vapours/results/pwm_results.hpp>
 #include <vapours/results/ro_results.hpp>

libraries/libvapours/include/vapours/results/powctl_results.hpp

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <vapours/results/results_common.hpp>
+
+namespace ams::powctl {
+
+    R_DEFINE_NAMESPACE_RESULT_MODULE(198);
+
+    R_DEFINE_ERROR_RESULT(NotSupported,    1);
+    R_DEFINE_ERROR_RESULT(InvalidArgument, 2);
+    R_DEFINE_ERROR_RESULT(NotAvailable,    3);
+
+}