Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/arch/s390/kernel/reipl64.S b/arch/s390/kernel/reipl64.S
index 5e73dee..9eabbc9 100644
--- a/arch/s390/kernel/reipl64.S
+++ b/arch/s390/kernel/reipl64.S
@@ -78,7 +78,7 @@
  * in the ESA psw.
  * Bit 31 of the addresses has to be 0 for the
  * 31bit lpswe instruction a fact they appear to have
- * ommited from the pop.
+ * omitted from the pop.
  */
 .Lnewpsw:	.quad	0x0000000080000000
 		.quad	.Lpg1