x86, boot: Remove multiple copy of static function sanitize_boot_params()

commit 8c5477e8046ca139bac250386c08453da37ec1ae upstream.

Kernel build warns:
 'sanitize_boot_params' defined but not used [-Wunused-function]

at below files:
  arch/x86/boot/compressed/cmdline.c
  arch/x86/boot/compressed/error.c
  arch/x86/boot/compressed/early_serial_console.c
  arch/x86/boot/compressed/acpi.c

That's becausethey each include misc.h which includes a definition of
sanitize_boot_params() via bootparam_utils.h.

Remove the inclusion from misc.h and have the c file including
bootparam_utils.h directly.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/1563283092-1189-1-git-send-email-zhenzhong.duan@oracle.com
[nc: Fixed conflict around lack of 67b6662559f7f]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arch/x86/boot/compressed/misc.c

@@ -11,6 +11,7 @@
 
 #include "misc.h"
 #include "../string.h"
+#include <asm/bootparam_utils.h>
 
 /* WARNING!!
  * This code is compiled with -fPIC and it is relocated dynamically

arch/x86/boot/compressed/misc.h

@@ -19,7 +19,6 @@
 #include <asm/page.h>
 #include <asm/boot.h>
 #include <asm/bootparam.h>
-#include <asm/bootparam_utils.h>
 
 #define BOOT_BOOT_H
 #include "../ctype.h"