lkl: add a header file to quiet an error

thehajime · thehajime · commit ac0f65e76fbe · 2016-10-10T17:23:43.000+09:00
Signed-off-by: Hajime Tazaki &lt;thehajime@gmail.com&gt;
diff --git a/arch/lkl/include/asm/ptrace.h b/arch/lkl/include/asm/ptrace.h
@@ -1,6 +1,8 @@
 #ifndef _ASM_LKL_PTRACE_H
 #define _ASM_LKL_PTRACE_H
 
+#include <linux/errno.h>
+
 struct task_struct;
 
 #define user_mode(regs) 0
