Add LMS implementation

Also an LM-OTS implementation as one is required for LMS.

Signed-off-by: Raef Coles <raef.coles@arm.com>
diff --git a/include/mbedtls/error.h b/include/mbedtls/error.h
index 8b2b9ea..73d61db 100644
--- a/include/mbedtls/error.h
+++ b/include/mbedtls/error.h
@@ -82,6 +82,8 @@
  * POLY1305  3                  0x0057-0x005B
  * CHACHAPOLY 2 0x0054-0x0056
  * PLATFORM  2  0x0070-0x0072
+ * LMOTS     2  0x0076-0x0078
+ * LMS       2  0x0011-0x0017
  *
  * High-level module nr (3 bits - 0x0...-0x7...)
  * Name      ID  Nr of Errors