Update LMS API to support multiple parameter sets

Parameterise macros to allow variation of sizes

Signed-off-by: Raef Coles <raef.coles@arm.com>
diff --git a/tests/suites/test_suite_lmots.function b/tests/suites/test_suite_lmots.function
index 73c9aff..ce69803 100644
--- a/tests/suites/test_suite_lmots.function
+++ b/tests/suites/test_suite_lmots.function
@@ -17,7 +17,7 @@
 {
     mbedtls_lmots_public_t pub_ctx;
     mbedtls_lmots_private_t priv_ctx;
-    unsigned char sig[MBEDTLS_LMOTS_SIG_LEN];
+    unsigned char sig[MBEDTLS_LMOTS_SIG_LEN(MBEDTLS_LMOTS_SHA256_N32_W8)];
     mbedtls_entropy_context entropy_ctx;
     mbedtls_ctr_drbg_context drbg_ctx;
     uint8_t seed[16];
@@ -67,13 +67,14 @@
 void lmots_import_export_test (  data_t * pub_key )
 {
     mbedtls_lmots_public_t ctx;
-    uint8_t exported_pub_key[MBEDTLS_LMOTS_PUBLIC_KEY_LEN];
+    uint8_t exported_pub_key[MBEDTLS_LMOTS_PUBLIC_KEY_LEN(MBEDTLS_LMOTS_SHA256_N32_W8)];
 
     mbedtls_lmots_init_public( &ctx );
     TEST_ASSERT( mbedtls_lmots_import_public_key( &ctx, pub_key->x, pub_key->len ) == 0 );
     TEST_ASSERT( mbedtls_lmots_export_public_key( &ctx, exported_pub_key, sizeof( exported_pub_key ), NULL ) == 0 );
 
-    TEST_ASSERT( memcmp( pub_key->x, exported_pub_key, MBEDTLS_LMOTS_PUBLIC_KEY_LEN ) == 0 );
+    TEST_ASSERT( memcmp( pub_key->x, exported_pub_key,
+                         MBEDTLS_LMOTS_PUBLIC_KEY_LEN(MBEDTLS_LMOTS_SHA256_N32_W8) ) == 0 );
 
 exit:
     mbedtls_lmots_free_public( &ctx );
@@ -84,7 +85,7 @@
 void lmots_reuse_test ( data_t * msg )
 {
     mbedtls_lmots_private_t ctx;
-    unsigned char sig[MBEDTLS_LMOTS_SIG_LEN];
+    unsigned char sig[MBEDTLS_LMOTS_SIG_LEN(MBEDTLS_LMOTS_SHA256_N32_W8)];
     mbedtls_entropy_context entropy_ctx;
     mbedtls_ctr_drbg_context drbg_ctx;
     uint8_t seed[16];