staging: skein: Add space around '%'

Add space around operator '%'. Problem found using
checkpatch.pl
CHECK: spaces preferred around that '%' (ctx:VxV)
Signed-off-by: Burcin Akalin <brcnakalin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/skein/skein_block.c

@@ -212,7 +212,7 @@
 #undef  RCNT
 #define RCNT  (SKEIN_1024_ROUNDS_TOTAL/8)
 #ifdef SKEIN_LOOP /* configure how much to unroll the loop */
-#define SKEIN_UNROLL_1024 ((SKEIN_LOOP)%10)
+#define SKEIN_UNROLL_1024 ((SKEIN_LOOP) % 10)
 #else
 #define SKEIN_UNROLL_1024 (0)
 #endif