Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 943c9b5..bea0ac7 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -98,7 +98,7 @@
  * @next:	pointer to the next irqaction for shared interrupts
  * @irq:	interrupt number
  * @dir:	pointer to the proc/irq/NN/name entry
- * @thread_fn:	interupt handler function for threaded interrupts
+ * @thread_fn:	interrupt handler function for threaded interrupts
  * @thread:	thread pointer for threaded interrupts
  * @thread_flags:	flags related to @thread
  * @thread_mask:	bitmask for keeping track of @thread activity
@@ -484,7 +484,7 @@
    Properties:
    * If tasklet_schedule() is called, then tasklet is guaranteed
      to be executed on some cpu at least once after this.
-   * If the tasklet is already scheduled, but its excecution is still not
+   * If the tasklet is already scheduled, but its execution is still not
      started, it will be executed only once.
    * If this tasklet is already running on another CPU (or schedule is called
      from tasklet itself), it is rescheduled for later.