hte: tegra194: improve the GPIO-related comment

Using any of the GPIO interfaces using the global numberspace is
deprecated. Make it clear in the comment.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Dipen Patel <dipenp@nvidia.com>
Signed-off-by: Dipen Patel <dipenp@nvidia.com>

Author: Bartosz Golaszewski

drivers/hte/hte-tegra194.c

@@ -407,12 +407,15 @@ static int tegra_hte_line_xlate(struct hte_chip *gc,
 		return -EINVAL;
 
 	/*
+	 * GPIO consumers can access GPIOs in two ways:
 	 *
-	 * There are two paths GPIO consumers can take as follows:
-	 * 1) The consumer (gpiolib-cdev for example) which uses GPIO global
-	 * number which gets assigned run time.
-	 * 2) The consumer passing GPIO from the DT which is assigned
-	 * statically for example by using TEGRA194_AON_GPIO gpio DT binding.
+	 * 1) Using the global GPIO numberspace.
+	 *
+	 * This is the old, now DEPRECATED method and should not be used in
+	 * new code. TODO: Check if tegra is even concerned by this.
+	 *
+	 * 2) Using GPIO descriptors that can be assigned to consumer devices
+	 * using device-tree, ACPI or lookup tables.
 	 *
 	 * The code below addresses both the consumer use cases and maps into
 	 * HTE/GTE namespace.