feat(mbedtls): optimize SHA256 for reduced memory footprint

Set MBEDTLS_SHA256_SMALLER as the default mbedTLS configuration
to minimize memory usage, trading off some processing speed for
a smaller footprint.

Change-Id: Ibfa6e115a0ed94096b9acdd9e237f3fb5457071d
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
1 file changed