[ARM] Use kcalloc to allocate counter_config array rather than kmalloc

We need this to be zero initialised.  Since this is an array, use kcalloc
rather than kzalloc or kmalloc.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/oprofile/common.c b/arch/arm/oprofile/common.c
index de72902..6f83335 100644
--- a/arch/arm/oprofile/common.c
+++ b/arch/arm/oprofile/common.c
@@ -140,7 +140,7 @@
 		if (ret < 0)
 			return ret;
 
-		counter_config = kmalloc(sizeof(struct op_counter_config) * spec->num_counters,
+		counter_config = kcalloc(spec->num_counters, sizeof(struct op_counter_config),
 					 GFP_KERNEL);
 		if (!counter_config)
 			return -ENOMEM;