ARM: tegra: move fuse exports to tegra-soc.h

ARM: tegra: move fuse exports to tegra-soc.h

All fuse related functionality will move to a driver in the following patches.
To prepare for this, export all the required functionality in a global header
file and move all users of fuse.h to tegra-soc.h. While we're at it, remove
tegra_bct_strapping, as its only user was removed in Commit a7cbe92cef27
("ARM: tegra: remove tegra EMC scaling driver").

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>