ata: mvebu: move mvebu sata driver to drivers/ata directory

Currently mvebu sata driver is in arch/arm/mach_mvebu directory, this
patch moves it to drivers/ata directory with renaming "sata.c" to
"ahci_mvebu.c" which is aligned to Linux.
New ahci driver's kconfig option is added as AHCI_MVEBU which selects
SCSI_AHCI and is based on AHCI.

Signed-off-by: Ken Ma <make@marvell.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Stefan Roese <sr@denx.de>

MAINTAINERS

@@ -135,6 +135,7 @@ S:	Maintained
 T:	git git://git.denx.de/u-boot-marvell.git
 F:	arch/arm/mach-kirkwood/
 F:	arch/arm/mach-mvebu/
+F:	drivers/ata/ahci_mvebu.c
 
 ARM MARVELL PXA
 M:	Marek Vasut <marex@denx.de>

arch/arm/mach-mvebu/Makefile

@@ -7,7 +7,6 @@ ifdef CONFIG_ARM64
 obj-$(CONFIG_ARMADA_3700) += armada3700/
 obj-$(CONFIG_ARMADA_8K) += armada8k/
 obj-y += arm64-common.o
-obj-$(CONFIG_AHCI) += sata.o
 
 else # CONFIG_ARM64
 

drivers/ata/Kconfig

@@ -99,4 +99,14 @@ config SATA_SIL3114
 	help
 	  Enable this driver to support the SIL3114 SATA controllers.
 
+config AHCI_MVEBU
+	bool "Marvell EBU AHCI SATA support"
+	depends on ARCH_MVEBU
+	depends on AHCI
+	select SCSI_AHCI
+	help
+	  This option enables support for the Marvell EBU SoC's
+	  onboard AHCI SATA.
+
+	  If unsure, say N.
 endmenu

drivers/ata/Makefile

@@ -17,3 +17,4 @@ obj-$(CONFIG_SATA_MV) += sata_mv.o
 obj-$(CONFIG_SATA_SIL3114) += sata_sil3114.o
 obj-$(CONFIG_SATA_SIL) += sata_sil.o
 obj-$(CONFIG_SANDBOX) += sata_sandbox.o
+obj-$(CONFIG_AHCI_MVEBU) += ahci_mvebu.o