padata: add parenthesis in MAX_SEQ_NR macro

MAX_SEQ_NR is used in padata_alloc_pd() like this:

        pd->max_seq_nr = (MAX_SEQ_NR / num_cpus) * num_cpus - 1;

It needs parenthesis or the divide by num_cpus takes precedence over the
subtraction.
Signed-off-by: NDan Carpenter <error27@gmail.com>
Acked-by: NSteffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

kernel/padata.c

@@ -28,7 +28,7 @@
 #include <linux/slab.h>
 #include <linux/rcupdate.h>
 
-#define MAX_SEQ_NR INT_MAX - NR_CPUS
+#define MAX_SEQ_NR (INT_MAX - NR_CPUS)
 #define MAX_OBJ_NUM 1000
 
 static int padata_index_to_cpu(struct parallel_data *pd, int cpu_index)