Add tzarc/ghoul. (#18562)

Co-authored-by: Joel Challis <git@zvecr.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>

keyboards/tzarc/ghoul/rev1/stm32/halconf.h

@@ -0,0 +1,9 @@
+// Copyright 2018-2022 Nick Brassel (@tzarc)
+// SPDX-License-Identifier: GPL-3.0-or-later
+#pragma once
+
+#define HAL_USE_ADC TRUE
+#define HAL_USE_SPI TRUE
+#define HAL_USE_PWM TRUE
+
+#include_next <halconf.h>