cosmetic: checkpatch cleanup of arch/x86/lib/*.c

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
diff --git a/arch/x86/include/asm/realmode.h b/arch/x86/include/asm/realmode.h
index c62310e..0f12a89 100644
--- a/arch/x86/include/asm/realmode.h
+++ b/arch/x86/include/asm/realmode.h
@@ -25,6 +25,10 @@
 #define __ASM_REALMODE_H_
 #include <asm/ptrace.h>
 
+extern ulong __realmode_start;
+extern ulong __realmode_size;
+extern char realmode_enter;
+
 int bios_setup(void);
 int enter_realmode(u16 seg, u16 off, struct pt_regs *in, struct pt_regs *out);
 int enter_realmode_int(u8 lvl, struct pt_regs *in, struct pt_regs *out);