Export get_random_int()

Needed for bcache - need a cheap source of random numbers for perturbing
IO sizes, for rate limiting IO to the SSD.
Signed-off-by: Kent Overstreet <koverstreet@google.com>
CC: "Theodore Ts'o" <tytso@mit.edu>

drivers/char/random.c

@@ -1485,6 +1485,7 @@ unsigned int get_random_int(void)
 
 	return ret;
 }
+EXPORT_SYMBOL(get_random_int);
 
 /*
  * randomize_range() returns a start address such that