fix(tbbr): guard defines under MBEDTLS_CONFIG_FILE

Several platforms, such as NXP platforms, employ Trusted Boot support
without relying on MBEDTLS_CONFIG. This patch addresses the build
issues that arose on such platforms as a result of recent change
c1ec23dd60 [1].

[1]: https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/23730

Change-Id: Idfbeeafb8a30dc15bb0060beb5b17819a8807084
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
1 file changed