uboot-phytec

tpm: add a helper to iterate on all tpm devices

This add a helper for_each_tpm_device that run
through all the tpm (1.x and 2.0) devices.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>