[MIPS] Fix errors detected by "make headers_check"

* export asm/sgidefs.h
* include asm/isadep.h only if in kernel
* do not export contents of asm/timex.h and asm/user.h
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

include/asm-mips/Kbuild

 include include/asm-generic/Kbuild.asm
+
+header-y += sgidefs.h

include/asm-mips/ptrace.h

@@ -10,8 +10,6 @@
 #define _ASM_PTRACE_H
 
 
-#include <asm/isadep.h>
-
 /* 0 - 31 are integer registers, 32 - 63 are fp registers.  */
 #define FPR_BASE	32
 #define PC		64
@@ -73,6 +71,7 @@ struct pt_regs {
 #ifdef __KERNEL__
 
 #include <linux/linkage.h>
+#include <asm/isadep.h>
 
 /*
  * Does the process account for user or for system time?

include/asm-mips/timex.h

@@ -8,6 +8,8 @@
 #ifndef _ASM_TIMEX_H
 #define _ASM_TIMEX_H
 
+#ifdef __KERNEL__
+
 #include <asm/mipsregs.h>
 
 /*
@@ -51,4 +53,6 @@ static inline cycles_t get_cycles (void)
 	return read_c0_count();
 }
 
+#endif /* __KERNEL__ */
+
 #endif /*  _ASM_TIMEX_H */

include/asm-mips/user.h

@@ -8,6 +8,8 @@
 #ifndef _ASM_USER_H
 #define _ASM_USER_H
 
+#ifdef __KERNEL__
+
 #include <asm/page.h>
 #include <asm/reg.h>
 
@@ -55,4 +57,6 @@ struct user {
 #define HOST_DATA_START_ADDR	(u.start_data)
 #define HOST_STACK_END_ADDR	(u.start_stack + u.u_ssize * NBPG)
 
+#endif /* __KERNEL__ */
+
 #endif /* _ASM_USER_H */