MIPS: introduce CPU_R4K_FPU

R4K-style CPUs have this boolean defined by default. Allows us
to remove some lines in arch/mips/kernel/Makefile.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/3330/
Signed-off-by: John Crispin <blogic@openwrt.org>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index b805ccd..0920936f 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1884,6 +1884,10 @@
 	bool
 	default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
 
+config CPU_R4K_FPU
+	bool
+	default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
+
 choice
 	prompt "MIPS MT options"
 
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index fdaf65e..ab51dc9 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -34,28 +34,11 @@
 
 obj-$(CONFIG_FUNCTION_TRACER)	+= mcount.o ftrace.o
 
-obj-$(CONFIG_CPU_LOONGSON2)	+= r4k_fpu.o r4k_switch.o
-obj-$(CONFIG_CPU_MIPS32)	+= r4k_fpu.o r4k_switch.o
-obj-$(CONFIG_CPU_MIPS64)	+= r4k_fpu.o r4k_switch.o
+obj-$(CONFIG_CPU_R4K_FPU)	+= r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_R3000)		+= r2300_fpu.o r2300_switch.o
-obj-$(CONFIG_CPU_R4300)		+= r4k_fpu.o r4k_switch.o
-obj-$(CONFIG_CPU_R4X00)		+= r4k_fpu.o r4k_switch.o
-obj-$(CONFIG_CPU_R5000)		+= r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_R6000)		+= r6000_fpu.o r4k_switch.o
-obj-$(CONFIG_CPU_R5432)		+= r4k_fpu.o r4k_switch.o
-obj-$(CONFIG_CPU_R5500)		+= r4k_fpu.o r4k_switch.o
-obj-$(CONFIG_CPU_R8000)		+= r4k_fpu.o r4k_switch.o
-obj-$(CONFIG_CPU_RM7000)	+= r4k_fpu.o r4k_switch.o
-obj-$(CONFIG_CPU_RM9000)	+= r4k_fpu.o r4k_switch.o
-obj-$(CONFIG_CPU_NEVADA)	+= r4k_fpu.o r4k_switch.o
-obj-$(CONFIG_CPU_R10000)	+= r4k_fpu.o r4k_switch.o
-obj-$(CONFIG_CPU_SB1)		+= r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_TX39XX)	+= r2300_fpu.o r2300_switch.o
-obj-$(CONFIG_CPU_TX49XX)	+= r4k_fpu.o r4k_switch.o
-obj-$(CONFIG_CPU_VR41XX)	+= r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_CAVIUM_OCTEON)	+= octeon_switch.o
-obj-$(CONFIG_CPU_XLR)		+= r4k_fpu.o r4k_switch.o
-obj-$(CONFIG_CPU_XLP)		+= r4k_fpu.o r4k_switch.o
 
 obj-$(CONFIG_SMP)		+= smp.o
 obj-$(CONFIG_SMP_UP)		+= smp-up.o