PPP, MAGIC: new function: magic_pow

magic_pow() returns a new random number between 0 and (2^pow)-1 included.

src/include/netif/ppp/magic.h

@@ -100,6 +100,11 @@ void magic_randomize(void);
  */
 u32_t magic(void);	/* Returns the next magic number */
 
+/*
+ * Return a new random number between 0 and (2^pow)-1 included.
+ */
+u32_t magic_pow(u8_t pow);
+
 #if PPP_MD5_RANDM
 /*
  * Fill buffer with random bytes