Rename "cipher_xyz" files to "cypher_xyz"

Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/library/cipher.c b/library/cypher.c
similarity index 100%
rename from library/cipher.c
rename to library/cypher.c
diff --git a/library/cipher_wrap.c b/library/cypher_wrap.c
similarity index 100%
rename from library/cipher_wrap.c
rename to library/cypher_wrap.c
diff --git a/library/cipher_wrap.h b/library/cypher_wrap.h
similarity index 100%
rename from library/cipher_wrap.h
rename to library/cypher_wrap.h