MIPS: Remove asm/user.h

The struct user definition in this file is not used anywhere (the ELF
core dumper does not use that format). Therefore, remove the header and
instead enable the asm-generic user.h which is an empty header to
satisfy a few generic headers which still try to include user.h.

Signed-off-by: Alex Smith <alex@alex-smith.me.uk>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7459/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/kernel/process.c

@@ -21,7 +21,6 @@
 #include <linux/mman.h>
 #include <linux/personality.h>
 #include <linux/sys.h>
-#include <linux/user.h>
 #include <linux/init.h>
 #include <linux/completion.h>
 #include <linux/kallsyms.h>
@@ -36,6 +35,7 @@
 #include <asm/pgtable.h>
 #include <asm/mipsregs.h>
 #include <asm/processor.h>
+#include <asm/reg.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 #include <asm/elf.h>

arch/mips/kernel/ptrace.c

@@ -24,7 +24,6 @@
 #include <linux/ptrace.h>
 #include <linux/regset.h>
 #include <linux/smp.h>
-#include <linux/user.h>
 #include <linux/security.h>
 #include <linux/tracehook.h>
 #include <linux/audit.h>

arch/mips/kernel/ptrace32.c

@@ -22,7 +22,6 @@
 #include <linux/errno.h>
 #include <linux/ptrace.h>
 #include <linux/smp.h>
-#include <linux/user.h>
 #include <linux/security.h>
 
 #include <asm/cpu.h>
@@ -32,6 +31,7 @@
 #include <asm/mipsmtregs.h>
 #include <asm/pgtable.h>
 #include <asm/page.h>
+#include <asm/reg.h>
 #include <asm/uaccess.h>
 #include <asm/bootinfo.h>