added random number generator driver and stuff

source/firmware/kernel/driver/include/rng.h

@@ -0,0 +1,30 @@
+/*
+ * rng.h
+ *
+ *  Created on: Aug 30, 2016
+ *      Author: tkl
+ */
+
+#ifndef SOURCE_FIRMWARE_KERNEL_DRIVER_INCLUDE_RNG_H_
+#define SOURCE_FIRMWARE_KERNEL_DRIVER_INCLUDE_RNG_H_
+
+typedef int (*rng_fp_open_t)(const void*);
+typedef int (*rng_fp_close_t)(const void*);
+typedef unsigned int (*rng_fp_read_t)(const void*);
+
+struct rng_fp {
+	const rng_fp_open_t		open;
+	const rng_fp_close_t	close;
+	const rng_fp_read_t		read;
+};
+
+struct rng {
+	const void *arch_dep_device;
+	const struct rng_fp *fp;
+};
+
+int rng_open(const struct rng *device);
+int rng_close(const struct rng *device);
+unsigned int rng_read(const struct rng *device);
+
+#endif /* SOURCE_FIRMWARE_KERNEL_DRIVER_INCLUDE_RNG_H_ */