New configuration preset baremetal_size
New configuration preset baremetal_size

The baremetal configuration includes debugging features whose size is not
particularly interesting. Create a new preset for use when benchmarking code
size which excludes debugging features that increase the size of
non-debugging modules.

Signed-off-by: Gilles Peskine <f805f64266d288fc5467baa7be6cd0ff366f477b@arm.com>

Mbed-TLS/mbedtls,ARMmbed/mbedtls,ARMmbed/mbedtls,ARMmbed/mbedtls,Mbed-TLS/mbedtls,Mbed-TLS/mbedtls,ARMmbed/mbedtls,Mbed-TLS/mbedtls