drivers/base: cacheinfo: fix annoying typo when DT nodes are absent

s/hierarcy/hierarchy/

Maybe the typo will annoy people enough so that they add the missing
nodes to their device-tree files, but I still think this is better off
fixed.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/ABI/testing/sysfs-devices-system-cpu

@@ -243,7 +243,7 @@ Description:	Parameters for the CPU cache attributes
 		coherency_line_size: the minimum amount of data in bytes that gets
 				     transferred from memory to cache
 
-		level: the cache hierarcy in the multi-level cache configuration
+		level: the cache hierarchy in the multi-level cache configuration
 
 		number_of_sets: total number of sets in the cache, a set is a
 				collection of cache lines with the same cache index

drivers/base/cacheinfo.c

@@ -191,12 +191,12 @@ static int detect_cache_attributes(unsigned int cpu)
 	if (ret)
 		goto free_ci;
 	/*
-	 * For systems using DT for cache hierarcy, of_node and shared_cpu_map
+	 * For systems using DT for cache hierarchy, of_node and shared_cpu_map
 	 * will be set up here only if they are not populated already
 	 */
 	ret = cache_shared_cpu_map_setup(cpu);
 	if (ret) {
-		pr_warn("Unable to detect cache hierarcy from DT for CPU %d\n",
+		pr_warn("Unable to detect cache hierarchy from DT for CPU %d\n",
 			cpu);
 		goto free_ci;
 	}

include/linux/cacheinfo.h

@@ -19,7 +19,7 @@ enum cache_type {
 /**
  * struct cacheinfo - represent a cache leaf node
  * @type: type of the cache - data, inst or unified
- * @level: represents the hierarcy in the multi-level cache
+ * @level: represents the hierarchy in the multi-level cache
  * @coherency_line_size: size of each cache line usually representing
  *	the minimum amount of data that gets transferred from memory
  * @number_of_sets: total number of sets, a set is a collection of cache