x86/boot: Build the command line parsing code unconditionally

Just drop the three-item ifdeffery and build it in unconditionally.
Early cmdline parsing is needed more often than not.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: bhe@redhat.com
Cc: hpa@zytor.com
Cc: indou.takao@jp.fujitsu.com
Cc: kasong@redhat.com
Cc: keescook@chromium.org
Cc: mingo@redhat.com
Cc: msys.mizuma@gmail.com
Cc: tglx@linutronix.de
Cc: x86@kernel.org
Link: https://lkml.kernel.org/r/20190130112238.GB18383@zn.tnic

arch/x86/boot/compressed/cmdline.c

 // SPDX-License-Identifier: GPL-2.0
 #include "misc.h"
 
-#if CONFIG_EARLY_PRINTK || CONFIG_RANDOMIZE_BASE || CONFIG_X86_5LEVEL
-
 static unsigned long fs;
 static inline void set_fs(unsigned long seg)
 {
@@ -30,5 +28,3 @@ int cmdline_find_option_bool(const char *option)
 {
 	return __cmdline_find_option_bool(get_cmd_line_ptr(), option);
 }
-
-#endif