ARM: 9326/1: make <linux/uaccess.h> self-contained for ARM

When I compiled the following code for ARM, I encountered numerous
errors.

[Test Code]

#include <linux/compiler.h>
#include <linux/uaccess.h>

int foo(int *x, int __user *ptr)
{
return get_user(*x, ptr);
}

To fix the errors, make some asm headers self-contained:

1. In arch/arm/include/asm/domain.h, include <linux/thread_info.h>
for current_thread_info().

2. In arch/arm/include/asm/traps.h, remove unneeded __init, and
include <linux/linkage.h> for asmlinkage.

3. In arch/arm/include/asm/uaccess.h, include <linux/kernel.h> for
might_fault().

Signed-off-by: Masahiro Yamada <[e-mail]>
Signed-off-by: Russell King (Oracle) <[e-mail]>

arch/arm/include/asm/domain.h

···
 #define __ASM_PROC_DOMAIN_H
 
 #ifndef __ASSEMBLY__
+#include <linux/thread_info.h>
 #include <asm/barrier.h>
-#include <asm/thread_info.h>
 #endif
 
 /*

arch/arm/include/asm/traps.h

···
 #ifndef _ASMARM_TRAP_H
 #define _ASMARM_TRAP_H
 
+#include <linux/linkage.h>
 #include <linux/list.h>
 
 struct pt_regs;
···
 	       ptr < (unsigned long)&__irqentry_text_end;
 }
 
-extern void __init early_trap_init(void *);
+extern void early_trap_init(void *);
 extern void dump_backtrace_entry(unsigned long where, unsigned long from,
 				 unsigned long frame, const char *loglvl);
 extern void ptrace_break(struct pt_regs *regs);

arch/arm/include/asm/uaccess.h

···
 /*
  * User space memory access functions
  */
+#include <linux/kernel.h>
 #include <linux/string.h>
 #include <asm/page.h>
 #include <asm/domain.h>