Convert line endings to unix format

Convert the line endings for nina_b1.c to unix format. This matches
the rest of the codebase. This also fixes strange git behavior which
cause this file to show up as modified even when no changes have
been made.

Author: c1728p9

source/board/nina_b1.c

@@ -1,31 +1,31 @@
-/**
- * @file    nina_b1.c
- * @brief   board ID for the u-blox NINA-B1 EVA maker board
- *
- * DAPLink Interface Firmware
- * Copyright (c) 2009-2016, ARM Limited, All Rights Reserved
- * SPDX-License-Identifier: Apache-2.0
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "target_config.h"
-
-const char *board_id = "1238";
-
-void prerun_board_config(void)
-{
-	// NINA-B1 is based on nrf52
-	extern target_cfg_t target_device_nrf52;
-	target_device = target_device_nrf52;
-}
+/**
+ * @file    nina_b1.c
+ * @brief   board ID for the u-blox NINA-B1 EVA maker board
+ *
+ * DAPLink Interface Firmware
+ * Copyright (c) 2009-2016, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "target_config.h"
+
+const char *board_id = "1238";
+
+void prerun_board_config(void)
+{
+	// NINA-B1 is based on nrf52
+	extern target_cfg_t target_device_nrf52;
+	target_device = target_device_nrf52;
+}