misc: fuse: fix dummy functions

The Tegra fuse header's dummy functions for the case where Tegra20 is
disabled are inconsistent with the correct prototypes, and have some
syntax errors. Fix these. While at it, fix the indentation level of
the dummy function bodies.

Fixes: 40969e30ad7c ("misc: fuse: Add efuse driver for Tegra")
Cc: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
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I intend to immediately apply this to Tegra's for-3.17/fuse-move branch.
Merge branch for-3.17/pcie-regulators into for-next
Merge branch for-3.17/fuse-move into for-next
Merge branch for-3.17/delay-timer into for-next
Merge branch for-3.17/soc into for-next
Merge branch for-3.17/dt-cros-ec-kbd into for-next
Merge branch for-3.17/dt into for-next
Merge branch for-3.17/defconfig into for-next