Adds L1TCM memory region.  The reg-name is "l1tcm".
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20210127083136.3745652-4-tzungbi@google.comSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>