MIPS: Alchemy: Only build AU1000 INTC code for compatible cpus

Use the GPIO config symbol to only build Au1000 interrupt code on chips with
compatible hw.
Signed-off-by: NManuel Lauss <manuel.lauss@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/670/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/alchemy/Kconfig

-# au1000-style gpio
-config ALCHEMY_GPIO_AU1000
+# au1000-style gpio and interrupt controllers
+config ALCHEMY_GPIOINT_AU1000
 	bool
 
 # select this in your board config if you don't want to use the gpio
@@ -133,27 +133,27 @@ endchoice
 config SOC_AU1000
 	bool
 	select SOC_AU1X00
-	select ALCHEMY_GPIO_AU1000
+	select ALCHEMY_GPIOINT_AU1000
 
 config SOC_AU1100
 	bool
 	select SOC_AU1X00
-	select ALCHEMY_GPIO_AU1000
+	select ALCHEMY_GPIOINT_AU1000
 
 config SOC_AU1500
 	bool
 	select SOC_AU1X00
-	select ALCHEMY_GPIO_AU1000
+	select ALCHEMY_GPIOINT_AU1000
 
 config SOC_AU1550
 	bool
 	select SOC_AU1X00
-	select ALCHEMY_GPIO_AU1000
+	select ALCHEMY_GPIOINT_AU1000
 
 config SOC_AU1200
 	bool
 	select SOC_AU1X00
-	select ALCHEMY_GPIO_AU1000
+	select ALCHEMY_GPIOINT_AU1000
 
 config SOC_AU1X00
 	bool

arch/mips/alchemy/common/Makefile

@@ -5,14 +5,16 @@
 # Makefile for the Alchemy Au1xx0 CPUs, generic files.
 #
 
-obj-y += prom.o irq.o time.o reset.o \
+obj-y += prom.o time.o reset.o \
 	clocks.o platform.o power.o setup.o \
 	sleeper.o dma.o dbdma.o
 
+obj-$(CONFIG_ALCHEMY_GPIOINT_AU1000) += irq.o
+
 # optional gpiolib support
 ifeq ($(CONFIG_ALCHEMY_GPIO_INDIRECT),)
  ifeq ($(CONFIG_GPIOLIB),y)
-  obj-$(CONFIG_ALCHEMY_GPIO_AU1000) += gpiolib-au1000.o
+  obj-$(CONFIG_ALCHEMY_GPIOINT_AU1000) += gpiolib-au1000.o
  endif
 endif
 

arch/mips/include/asm/mach-au1x00/gpio.h

 #ifndef _ALCHEMY_GPIO_H_
 #define _ALCHEMY_GPIO_H_
 
-#if defined(CONFIG_ALCHEMY_GPIO_AU1000)
+#if defined(CONFIG_ALCHEMY_GPIOINT_AU1000)
 
 #include <asm/mach-au1x00/gpio-au1000.h>