pinctrl: tegra: do not export tegra_pinctrl_probe

No user of tegra_pinctrl_probe can be built as a module, hence
exporting the symbol is not necessary. Drop EXPORT_SYMBOL_GPL.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/tegra/pinctrl-tegra.c

@@ -737,4 +737,3 @@ int tegra_pinctrl_probe(struct platform_device *pdev,
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(tegra_pinctrl_probe);