ata: fix R-Car SATA driver dependencies

Make sata_rcar host driver depend on ARCH_SHMOBILE config option as Renesas R-Car SATA support is specific to Renesas SoCs and the driver to work requires suitable device tree node (or platform device) to be defined. Additionally allow the driver build if COMPILE_TEST config option is set.

---
 drivers/ata/Kconfig |    1 +
 1 file changed, 1 insertion(+)

Index: b/drivers/ata/Kconfig
===================================================================
@@ -298,6 +298,7 @@ config SATA_PROMISE
 
 config SATA_RCAR
 	tristate "Renesas R-Car SATA support"
+	depends on ARCH_SHMOBILE || COMPILE_TEST
 	help
 	  This option enables support for Renesas R-Car Serial ATA.
 

Applied to libata/for-3.15.

Thanks.

tejun