Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
index 74867df..4be85ee 100644
--- a/arch/parisc/kernel/syscall_table.S
+++ b/arch/parisc/kernel/syscall_table.S
@@ -34,7 +34,7 @@
 /* Use ENTRY_SAME for 32-bit syscalls which are the same on wide and
  * narrow palinux.  Use ENTRY_DIFF for those where a 32-bit specific
  * implementation is required on wide palinux.  Use ENTRY_COMP where
- * the compatability layer has a useful 32-bit implementation.
+ * the compatibility layer has a useful 32-bit implementation.
  */
 #define ENTRY_SAME(_name_) .dword sys_##_name_
 #define ENTRY_DIFF(_name_) .dword sys32_##_name_