Added hardware random option and added function to set seed

include/random.h

@@ -1,3 +1,11 @@
 #include "types.h"
 
+// Get a pseudo random number
 uint8_t random();
+// Set the seed for the random number generator
+void random_set_seed(uint8_t seed);
+
+// Get a random number from hardware
+uint8_t random_hw();
+
+