Renamed mbedtls_mpi_get_montgomery_constant_unsafe to mpi_core_get_mont_R2_unsafe

Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
diff --git a/library/bignum_core.c b/library/bignum_core.c
index 457405d..a3547bd 100644
--- a/library/bignum_core.c
+++ b/library/bignum_core.c
@@ -511,8 +511,8 @@
     mbedtls_ct_mpi_uint_cond_assign( AN_limbs, X, T, (unsigned char) ( carry ^ borrow ) );
 }
 
-int mbedtls_mpi_get_montgomery_constant_unsafe( mbedtls_mpi *X,
-                                                mbedtls_mpi const *N )
+int mbedtls_mpi_core_get_mont_R2_unsafe( mbedtls_mpi *X,
+                                         mbedtls_mpi const *N )
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;