staging: media: tegra-video: Kconfig: allow TPG only on Tegra210

We are about to add support for the Tegra20 parallel video capture, which
has no TPG. In preparation for that, limit the VIDEO_TEGRA_TPG option to
Tegra210 which is the only implementation currently provided by this
driver.
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/staging/media/tegra-video/Kconfig

@@ -15,5 +15,6 @@ config VIDEO_TEGRA
 config VIDEO_TEGRA_TPG
 	bool "NVIDIA Tegra VI driver TPG mode"
 	depends on VIDEO_TEGRA
+	depends on ARCH_TEGRA_210_SOC
 	help
 	  Say yes here to enable Tegra internal TPG mode