i2c: tegra: Add the fifth bus on SoC with more than 4 buses

Create the i2c adapter object for the fifth bus on SoC with more than
4 buses. This allow using all the bus available on T30.
Signed-off-by: NAlban Bedel <alban.bedel@avionic-design.de>
Acked-by: NHeiko Schocher <hs@denx.de>
Signed-off-by: NTom Warren <twarren@nvidia.com>

drivers/i2c/tegra_i2c.c

@@ -629,3 +629,8 @@ U_BOOT_I2C_ADAP_COMPLETE(tegra2, tegra_i2c_init, tegra_i2c_probe,
 U_BOOT_I2C_ADAP_COMPLETE(tegra3, tegra_i2c_init, tegra_i2c_probe,
 			 tegra_i2c_read, tegra_i2c_write,
 			 tegra_i2c_set_bus_speed, 100000, 0, 3)
+#if TEGRA_I2C_NUM_CONTROLLERS > 4
+U_BOOT_I2C_ADAP_COMPLETE(tegra4, tegra_i2c_init, tegra_i2c_probe,
+			 tegra_i2c_read, tegra_i2c_write,
+			 tegra_i2c_set_bus_speed, 100000, 0, 4)
+#endif