staging: media: tegra-video: move tegra210_csi_soc declaration to csi.h

Sparse warns that tegra210_csi_soc is not declared in tegra210.c.
The symbol is referenced from csi.c, so it must remain global. Move the
declaration to csi.h so users see it via the header and avoid extern
declarations in .c files.

SPARSE: drivers/staging/media/tegra-video/tegra210.c:1214:28: warning:
 symbol 'tegra210_csi_soc' was not declared. Should it be static?

No functional change intended.

Suggested-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Sun Jian <sun.jian.kdev@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

drivers/staging/media/tegra-video/csi.c

@@ -835,10 +835,6 @@ static void tegra_csi_remove(struct platform_device *pdev)
 	pm_runtime_disable(&pdev->dev);
 }
 
-#if defined(CONFIG_ARCH_TEGRA_210_SOC)
-extern const struct tegra_csi_soc tegra210_csi_soc;
-#endif
-
 static const struct of_device_id tegra_csi_of_id_table[] = {
 #if defined(CONFIG_ARCH_TEGRA_210_SOC)
 	{ .compatible = "nvidia,tegra210-csi", .data = &tegra210_csi_soc },

drivers/staging/media/tegra-video/csi.h

@@ -130,6 +130,10 @@ struct tegra_csi_soc {
 	unsigned int tpg_frmrate_table_size;
 };
 
+#if defined(CONFIG_ARCH_TEGRA_210_SOC)
+extern const struct tegra_csi_soc tegra210_csi_soc;
+#endif
+
 /**
  * struct tegra_csi - NVIDIA Tegra CSI device structure
  *