scripts/spelling.txt: add "intialization" pattern and fix typo instances

Fix typos and add the following to the scripts/spelling.txt:

  intialization||initialization

The "inintialization" in drivers/acpi/spcr.c is a different pattern but
I fixed it as well in this commit.

Link: http://lkml.kernel.org/r/1481573103-11329-16-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index f945351..cdbb293 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -1475,7 +1475,7 @@ static void sas_end_device_release(struct device *dev)
 }
 
 /**
- * sas_rphy_initialize - common rphy intialization
+ * sas_rphy_initialize - common rphy initialization
  * @rphy:	rphy to initialise
  *
  * Used by both sas_end_device_alloc() and sas_expander_alloc() to