drivers: ata: Rename ahci_mvebu

Rename 'ahci_mvebu' to 'ahci_generic' and select it by default.
The AHCI driver contains no SoC specific code and only expects the
base address to be passed, thus rename it to ahci_generic and add the
DT compatible string "generic-ahci".

Update existing defconfigs to use the new Kconfig name as well.

TEST: Booted on QEMU sbsa using the generic-ahci node.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Stefan Roese <sr@denx.de>
Acked-by: Tony Dinh <mibodhi@gmail.com>
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 6cca561..4fbb63a 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -78,14 +78,16 @@
 	  Enable this driver to support Sata devices through
 	  Mediatek AHCI controller (e.g. MT7622).
 
-config AHCI_MVEBU
-	bool "Marvell EBU AHCI SATA support"
-	depends on ARCH_MVEBU || ARCH_OCTEON
+config AHCI_GENERIC
+	bool "Generic AHCI SATA support"
+	depends on OF_CONTROL
 	select SCSI_AHCI
 	select SCSI
 	help
-	  This option enables support for the Marvell EBU SoC's
-	  onboard AHCI SATA.
+	  This option enables support for generic onboard AHCI SATA controller
+	  that do not need platform specific quirks, like emulated devices,
+	  Marvell EBU SoC's onboard AHCI SATA controllers or Cavium's Octeon
+	  7130 AHCI controllers.
 
 	  If unsure, say N.