x86/Voyager: remove X86_BIOS_REBOOT Kconfig quirk

Voyager has this Kconfig quirk:

config X86_BIOS_REBOOT
	bool
	depends on !X86_VOYAGER
	default y

Voyager should use the existing machine_ops.emergency_restart reboot
quirk mechanism instead of a build-time quirk.
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/Kconfig

@@ -190,11 +190,6 @@ config X86_HT
 	depends on SMP
 	default y
 
-config X86_BIOS_REBOOT
-	bool
-	depends on !X86_VOYAGER
-	default y
-
 config X86_TRAMPOLINE
 	bool
 	depends on SMP || (64BIT && ACPI_SLEEP)
@@ -1361,7 +1356,6 @@ source kernel/Kconfig.hz
 
 config KEXEC
 	bool "kexec system call"
-	depends on X86_BIOS_REBOOT
 	help
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot

arch/x86/include/asm/proto.h

@@ -18,11 +18,7 @@ extern void syscall32_cpu_init(void);
 
 extern void check_efer(void);
 
-#ifdef CONFIG_X86_BIOS_REBOOT
 extern int reboot_force;
-#else
-static const int reboot_force = 0;
-#endif
 
 long do_arch_prctl(struct task_struct *task, int code, unsigned long addr);
 

arch/x86/kernel/Makefile

@@ -50,7 +50,7 @@ obj-y				+= step.o
 obj-$(CONFIG_STACKTRACE)	+= stacktrace.o
 obj-y				+= cpu/
 obj-y				+= acpi/
-obj-$(CONFIG_X86_BIOS_REBOOT)	+= reboot.o
+obj-y				+= reboot.o
 obj-$(CONFIG_MCA)		+= mca_32.o
 obj-$(CONFIG_X86_MSR)		+= msr.o
 obj-$(CONFIG_X86_CPUID)		+= cpuid.o