mips ptrace compat build error

[Adrian Bunk <bunk@xxxxxxxxxx>]

Commit e16b27816462de700f9508d86954410c41105dc2
(ptrace: compat_ptrace_request siginfo) causes
the following build error with CONFIG_COMPAT=y
on mips:

<--  snip   -->

...
  LD      .tmp_vmlinux1
kernel/built-in.o: In function `$L181':
ptrace.c:(.text+0x1d380): undefined reference to `copy_siginfo_from_user32'
ptrace.c:(.text+0x1d380): relocation truncated to fit: R_MIPS_26 against `copy_siginfo_from_user32'
make[1]: *** [.tmp_vmlinux1] Error 1

<--  snip  -->

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed