MIPS: Alchemy: Single kernel for DB1200/1300/1550

Combine support for the DB1200/PB1200, DB1300 and DB1550 boards into
a single kernel image.

defconfig-generated image verified on DB1200, DB1300 and DB1550.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4335/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/alchemy/Kconfig b/arch/mips/alchemy/Kconfig
index 0faaab2..b4929b9 100644
--- a/arch/mips/alchemy/Kconfig
+++ b/arch/mips/alchemy/Kconfig
@@ -36,25 +36,9 @@
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 	select SYS_HAS_EARLY_PRINTK
 
-config MIPS_DB1200
-	bool "Alchemy DB1200/PB1200 board"
-	select ALCHEMY_GPIOINT_AU1000
-	select DMA_COHERENT
-	select MIPS_DISABLE_OBSOLETE_IDE
-	select SYS_SUPPORTS_LITTLE_ENDIAN
-	select SYS_HAS_EARLY_PRINTK
-
-config MIPS_DB1300
-	bool "NetLogic DB1300 board"
-	select ALCHEMY_GPIOINT_AU1300
-	select DMA_COHERENT
-	select MIPS_DISABLE_OBSOLETE_IDE
-	select SYS_SUPPORTS_LITTLE_ENDIAN
-	select SYS_HAS_EARLY_PRINTK
-
-config MIPS_DB1550
-	bool "Alchemy DB1550 board"
-	select ALCHEMY_GPIOINT_AU1000
+config MIPS_DB1235
+	bool "Alchemy DB1200/PB1200/DB1300/DB1550 boards"
+	select ARCH_REQUIRE_GPIOLIB
 	select HW_HAS_PCI
 	select DMA_COHERENT
 	select MIPS_DISABLE_OBSOLETE_IDE