ata: ahci_tegra: add compile test support

Add Kconfig dependendy on COMPILE_TEST to allow compile tests with
configs that do not enable ARCH_TEGRA.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>

drivers/ata/Kconfig

@@ -246,7 +246,7 @@ config AHCI_SUNXI
 
 config AHCI_TEGRA
 	tristate "NVIDIA Tegra AHCI SATA support"
-	depends on ARCH_TEGRA
+	depends on ARCH_TEGRA || COMPILE_TEST
 	select SATA_HOST
 	help
 	  This option enables support for the NVIDIA Tegra SoC's