Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/mm/percpu.c b/mm/percpu.c
index 55d4d11..a160db3 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -342,7 +342,7 @@
  * @chunk: chunk of interest
  *
  * Determine whether area map of @chunk needs to be extended to
- * accomodate a new allocation.
+ * accommodate a new allocation.
  *
  * CONTEXT:
  * pcpu_lock.
@@ -431,7 +431,7 @@
  * depending on @head, is reduced by @tail bytes and @tail byte block
  * is inserted after the target block.
  *
- * @chunk->map must have enough free slots to accomodate the split.
+ * @chunk->map must have enough free slots to accommodate the split.
  *
  * CONTEXT:
  * pcpu_lock.
@@ -1435,7 +1435,7 @@
 	/*
 	 * Determine min_unit_size, alloc_size and max_upa such that
 	 * alloc_size is multiple of atom_size and is the smallest
-	 * which can accomodate 4k aligned segments which are equal to
+	 * which can accommodate 4k aligned segments which are equal to
 	 * or larger than min_unit_size.
 	 */
 	min_unit_size = max_t(size_t, size_sum, PCPU_MIN_UNIT_SIZE);
@@ -1550,7 +1550,7 @@
  * @atom_size: allocation atom size
  * @cpu_distance_fn: callback to determine distance between cpus, optional
  * @alloc_fn: function to allocate percpu page
- * @free_fn: funtion to free percpu page
+ * @free_fn: function to free percpu page
  *
  * This is a helper to ease setting up embedded first percpu chunk and
  * can be called where pcpu_setup_first_chunk() is expected.
@@ -1678,7 +1678,7 @@
  * pcpu_page_first_chunk - map the first chunk using PAGE_SIZE pages
  * @reserved_size: the size of reserved percpu area in bytes
  * @alloc_fn: function to allocate percpu page, always called with PAGE_SIZE
- * @free_fn: funtion to free percpu page, always called with PAGE_SIZE
+ * @free_fn: function to free percpu page, always called with PAGE_SIZE
  * @populate_pte_fn: function to populate pte
  *
  * This is a helper to ease setting up page-remapped first percpu