[tip:x86/boot] x86/boot: Fix Sparse warning by including required header file

[tip-bot for Zhengyi Shen <tipbot@zytor.com>]

Commit-ID:  5af218439f3a4c9ca7139a40e5d047fe1ea39551
Gitweb:     http://git.kernel.org/tip/5af218439f3a4c9ca7139a40e5d047fe1ea39551
Author:     Zhengyi Shen <shenzhengyi@gmail.com>
AuthorDate: Wed, 29 Mar 2017 15:00:20 +0800
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Fri, 31 Mar 2017 08:13:54 +0200

x86/boot: Fix Sparse warning by including required header file

Include declarations for various symbols defined in the error.h header file
to fix the following Sparse warnings:

  arch/x86/boot/compressed/error.c:8:6:
	warning: symbol 'warn' was not declared. Should it be static?
  arch/x86/boot/compressed/error.c:15:6:
	warning: symbol 'error' was not declared. Should it be static?

Signed-off-by: Zhengyi Shen <shenzhengyi@gmail.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1490770820-24472-1-git-send-email-shenzhengyi@gmail.com
[ Fixed/enhanced the changelog. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/x86/boot/compressed/error.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/boot/compressed/error.c b/arch/x86/boot/compressed/error.c
index 6248740..3192202 100644
--- a/arch/x86/boot/compressed/error.c
+++ b/arch/x86/boot/compressed/error.c
@@ -4,6 +4,7 @@
  * memcpy() and memmove() are defined for the compressed boot environment.
  */
 #include "misc.h"
+#include "error.h"
 
 void warn(char *m)
 {