hte: tegra194: remove Kconfig dependency on Tegra194 SoC

hte: tegra194: remove Kconfig dependency on Tegra194 SoC

This driver runs also on other Tegra SoCs (e.g. Tegra234).
Replace Kconfig dependency on Tegra194 with more generic dependency on
Tegra, and amend the Kconfig help text to reflect the fact that this
driver works on SoCs other than Tegra194.

Fixes: b003fb5c9df8 ("hte: Add Tegra234 provider")
Signed-off-by: Francesco Lavra <flavra@baylibre.com>
Acked-by: Dipen Patel <dipenp@nvidia.com>
Signed-off-by: Dipen Patel <dipenp@nvidia.com>