This renames all the Tegra20 pinmux pins and functions so they have a
prefix which matches the type name.
The entries in tegra20_pingroups are all updated to remove the columns
which are no longer used.
All affected code is updated to match.
Signed-off-by: Stephen Warren <email@example.com>
Acked-by: Simon Glass <firstname.lastname@example.org>
Signed-off-by: Tom Warren <email@example.com>