x86, bigsmp: consolidate code

Move all code to arch/x86/kernel/bigsmp_32.c.

With this it ceases to rely on any build-time subarch features.
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/Makefile

@@ -71,6 +71,7 @@ obj-$(CONFIG_FUNCTION_GRAPH_TRACER)	+= ftrace.o
 obj-$(CONFIG_KEXEC)		+= machine_kexec_$(BITS).o
 obj-$(CONFIG_KEXEC)		+= relocate_kernel_$(BITS).o crash.o
 obj-$(CONFIG_CRASH_DUMP)	+= crash_dump_$(BITS).o
+obj-$(CONFIG_X86_BIGSMP)	+= bigsmp_32.o
 obj-$(CONFIG_X86_NUMAQ)		+= numaq_32.o
 obj-$(CONFIG_X86_ES7000)	+= es7000_32.o
 obj-$(CONFIG_X86_SUMMIT)	+= summit_32.o

arch/x86/mach-generic/Makefile

@@ -5,4 +5,3 @@
 EXTRA_CFLAGS			:= -Iarch/x86/kernel
 
 obj-y				:= probe.o default.o
-obj-$(CONFIG_X86_BIGSMP)	+= bigsmp.o