ata: move library code from ahci_platform.c to libahci_platform.c

Move AHCI platform library code from ahci_platform.c to
libahci_platform.c and fix dependencies for ahci_st,
ahci_imx and ahci_sunxi drivers.

Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

drivers/ata/Kconfig

@@ -99,7 +99,6 @@ config SATA_AHCI_PLATFORM
 
 config AHCI_ST
 	tristate "ST AHCI SATA support"
-	depends on SATA_AHCI_PLATFORM
 	depends on ARCH_STI
 	help
 	  This option enables support for ST AHCI SATA controller.
@@ -108,7 +107,7 @@ config AHCI_ST
 
 config AHCI_IMX
 	tristate "Freescale i.MX AHCI SATA support"
-	depends on SATA_AHCI_PLATFORM && MFD_SYSCON
+	depends on MFD_SYSCON
 	help
 	  This option enables support for the Freescale i.MX SoC's
 	  onboard AHCI SATA.
@@ -117,7 +116,7 @@ config AHCI_IMX
 
 config AHCI_SUNXI
 	tristate "Allwinner sunxi AHCI SATA support"
-	depends on ARCH_SUNXI && SATA_AHCI_PLATFORM
+	depends on ARCH_SUNXI
 	help
 	  This option enables support for the Allwinner sunxi SoC's
 	  onboard AHCI SATA.
@@ -126,7 +125,7 @@ config AHCI_SUNXI
 
 config AHCI_XGENE
 	tristate "APM X-Gene 6.0Gbps AHCI SATA host controller support"
-	depends on SATA_AHCI_PLATFORM && (ARM64 || COMPILE_TEST)
+	depends on ARM64 || COMPILE_TEST
 	select PHY_XGENE
 	help
 	 This option enables support for APM X-Gene SoC SATA host controller.

drivers/ata/Makefile

@@ -4,16 +4,16 @@ obj-$(CONFIG_ATA)		+= libata.o
 # non-SFF interface
 obj-$(CONFIG_SATA_AHCI)		+= ahci.o libahci.o
 obj-$(CONFIG_SATA_ACARD_AHCI)	+= acard-ahci.o libahci.o
-obj-$(CONFIG_SATA_AHCI_PLATFORM) += ahci_platform.o libahci.o
+obj-$(CONFIG_SATA_AHCI_PLATFORM) += ahci_platform.o libahci.o libahci_platform.o
 obj-$(CONFIG_SATA_FSL)		+= sata_fsl.o
 obj-$(CONFIG_SATA_INIC162X)	+= sata_inic162x.o
 obj-$(CONFIG_SATA_SIL24)	+= sata_sil24.o
 obj-$(CONFIG_SATA_DWC)		+= sata_dwc_460ex.o
 obj-$(CONFIG_SATA_HIGHBANK)	+= sata_highbank.o libahci.o
-obj-$(CONFIG_AHCI_IMX)		+= ahci_imx.o
-obj-$(CONFIG_AHCI_SUNXI)	+= ahci_sunxi.o
-obj-$(CONFIG_AHCI_ST)		+= ahci_st.o
-obj-$(CONFIG_AHCI_XGENE)	+= ahci_xgene.o
+obj-$(CONFIG_AHCI_IMX)		+= ahci_imx.o libahci.o libahci_platform.o
+obj-$(CONFIG_AHCI_SUNXI)	+= ahci_sunxi.o libahci.o libahci_platform.o
+obj-$(CONFIG_AHCI_ST)		+= ahci_st.o libahci.o libahci_platform.o
+obj-$(CONFIG_AHCI_XGENE)	+= ahci_xgene.o libahci.o libahci_platform.o
 
 # SFF w/ custom DMA
 obj-$(CONFIG_PDC_ADMA)		+= pdc_adma.o