[Keyboard] Add Valor FRL TKL rev2.0 and 2.1 (#17992)

* add valor frl tkl rev2 by xelus22

keyboards/xelus/valor_frl_tkl/rev2_1/mcuconf.h

@@ -0,0 +1,34 @@
+/* Copyright 2022 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that 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_next <mcuconf.h>
+
+#undef STM32_PLLM_VALUE
+#undef STM32_PLLN_VALUE
+#undef STM32_PLLP_VALUE
+#undef STM32_PLLQ_VALUE
+#undef STM32_PPRE1
+#undef STM32_PPRE2
+
+// 84MHz core
+#define STM32_PLLM_VALUE    8
+#define STM32_PLLN_VALUE    168
+#define STM32_PLLP_VALUE    4
+#define STM32_PLLQ_VALUE    7
+#define STM32_PPRE1         STM32_PPRE1_DIV2
+#define STM32_PPRE2         STM32_PPRE1_DIV1