rcar_gen3: drivers: cpld: Move rcar_cpld_reset_cpu() into header

Move the rcar_cpld_reset_cpu() function into header file and zap the externs.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
diff --git a/drivers/renesas/rcar/cpld/ulcb_cpld.h b/drivers/renesas/rcar/cpld/ulcb_cpld.h
new file mode 100644
index 0000000..1616d71
--- /dev/null
+++ b/drivers/renesas/rcar/cpld/ulcb_cpld.h
@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) 2018, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef RCAR_ULCB_CPLD_H__
+#define RCAR_ULCB_CPLD_H__
+
+extern void rcar_cpld_reset_cpu(void);
+
+#endif /* RCAR_ULCB_CPLD_H__ */