ARM: tegra: fix-up tegra_gpio enable/diablse defs

Clean-up the definition of the tegra_gpio enable/disable so that
it compares to the l4t r16 rel.

Change-Id: Ia8584ada1e2a728d2784d6d57c72ed4b0ee01cf1
Signed-off-by: Matt Pedro <mapedro@nvidia.com>
Reviewed-on: http://git-master/r/140648
Reviewed-by: Automatic_Commit_Validation_User