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/mcuconf.h

@@ -0,0 +1,17 @@
+// Copyright 2018-2022 Nick Brassel (@tzarc)
+// SPDX-License-Identifier: GPL-3.0-or-later
+#pragma once
+
+#include_next <mcuconf.h>
+
+// Used for RGB
+#undef STM32_ADC_USE_ADC1
+#define STM32_ADC_USE_ADC1 TRUE
+
+// Used for EEPROM
+#undef STM32_SPI_USE_SPI1
+#define STM32_SPI_USE_SPI1 TRUE
+
+// Used for RGB
+#undef STM32_PWM_USE_TIM3
+#define STM32_PWM_USE_TIM3 TRUE