lib: Correct comment of prandom_seed

Variable 'entropy' was wrongly documented as 'seed', changed comment to
reflect actual variable name.

../lib/random32.c:179: warning: Function parameter or member 'entropy' not described in 'prandom_seed'
../lib/random32.c:179: warning: Excess function parameter 'seed' description in 'prandom_seed'
Signed-off-by: NPhilippe Mazenauer <philippe.mazenauer@outlook.de>
Acked-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

lib/random32.c

@@ -171,9 +171,9 @@ static void prandom_seed_early(struct rnd_state *state, u32 seed,
 
 /**
  *	prandom_seed - add entropy to pseudo random number generator
- *	@seed: seed value
+ *	@entropy: entropy value
  *
- *	Add some additional seeding to the prandom pool.
+ *	Add some additional entropy to the prandom pool.
  */
 void prandom_seed(u32 entropy)
 {