lib/percpu_counter: add missing __percpu qualifier to a cast

Add missing __percpu qualifier to a (void *) cast to fix

percpu_counter.c:212:36: warning: cast removes address space '__percpu' of expression
percpu_counter.c:212:33: warning: incorrect type in assignment (different address spaces)
percpu_counter.c:212:33: expected signed int [noderef] [usertype] __percpu *counters
percpu_counter.c:212:33: got void *

sparse warnings.

Found by GCC's named address space checks.

There were no changes in the resulting object file.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Uros Bizjak <[e-mail]>
Cc: Dennis Zhou <[e-mail]>
Cc: Tejun Heo <[e-mail]>
Cc: Christoph Lameter <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>

lib/percpu_counter.c

···
 		INIT_LIST_HEAD(&fbc[i].list);
 #endif
 		fbc[i].count = amount;
-		fbc[i].counters = (void *)counters + (i * counter_size);
+		fbc[i].counters = (void __percpu *)counters + i * counter_size;
 
 		debug_percpu_counter_activate(&fbc[i]);
 	}