Since I do have a look on TEE patches regardless and Jens doesn't have
his own tree, add myself as a co-maintainer.  I'll be carrying over the
TEE related patches from now on.  While at it add the maintenance tree
for TPM

Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>