crypto: Adjust Mbed TLS legacy for Mbed TLS v3.6.1 support

-This removes setting of MBEDTLS_ECP_MAX_BITS as this would
 result in a build-issue when trying to resolve the largest enabled
 curve size.

 This needs to be followed up with a cleanup of MBEDTLS_ECP_LIGHT
 which is still dependent on BIGNUM and BUILTIN types to be enabled

Signed-off-by: Frank Audun Kvamtrø <[email protected]>

Author: frkv

crypto/nrf_cc310_mbedcrypto/include/mbedtls/ecp_alt.h

@@ -83,13 +83,6 @@ mbedtls_ecp_group;
  * \{
  */
 
-#if !defined(MBEDTLS_ECP_MAX_BITS)
-/**
- * The maximum size of the groups, that is, of \c N and \c P.
- */
-#define MBEDTLS_ECP_MAX_BITS     384   /**< The maximum size of groups, in bits. */
-#endif
-
 #if !defined(MBEDTLS_ECP_WINDOW_SIZE)
 /*
  * Maximum "window" size used for point multiplication.

crypto/nrf_cc312_mbedcrypto/include/mbedtls/ecp_alt.h

@@ -83,13 +83,6 @@ mbedtls_ecp_group;
  * \{
  */
 
-#if !defined(MBEDTLS_ECP_MAX_BITS)
-/**
- * The maximum size of the groups, that is, of \c N and \c P.
- */
-#define MBEDTLS_ECP_MAX_BITS     384   /**< The maximum size of groups, in bits. */
-#endif
-
 #if !defined(MBEDTLS_ECP_WINDOW_SIZE)
 /*
  * Maximum "window" size used for point multiplication.