Staging: phison: fix kconfig for clean build

phison is an ATA driver, not a classic IDE driver, so fix the Kconfig file
so that it will build.

drivers/staging/phison/phison.c:43: error: implicit declaration of function 'ATA_BMDMA_SHT'
drivers/staging/phison/phison.c:43: error: initializer element is not constant
drivers/staging/phison/phison.c:43: error: (near initialization for 'phison_sht.module')
drivers/staging/phison/phison.c:47: error: 'ata_bmdma_port_ops' undeclared here (not in a function)
drivers/staging/phison/phison.c:65: error: implicit declaration of function 'ata_pci_sff_init_one'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/phison/Kconfig

 config IDE_PHISON
 	tristate "PCIE ATA PS5000 IDE support"
-	depends on IDE
+	depends on ATA && ATA_SFF
 	---help---
 	  This is an experimental driver for PS5000 IDE driver.