soc/tegra: fuse: Export tegra_read_ram_code()

The tegra_read_ram_code() is used by EMC drivers and we're going to make
these driver modular, hence this function needs to be exported.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20201104164923.21238-3-digetx@gmail.com


Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>