Add localplt.data for ColdFire.

The sole failure for ColdFire in the compilation part of the glibc
testsuite is the localplt test.  This patch adds a localplt baseline
for ColdFire to eliminate that failure.  The difference from the
existing m68k baseline is that no PLT entry for _Unwind_Find_FDE is
expected, because ColdFire does not set
libc_cv_gcc_unwind_find_fde=yes.

Tested with build-many-glibcs.py.

	* sysdeps/unix/sysv/linux/m68k/localplt.data: Move to ....
	* sysdeps/unix/sysv/linux/m68k/m680x0/localplt.data: ... here.
	* sysdeps/unix/sysv/linux/m68k/coldfire/localplt.data: New file.

ChangeLog

@@ -1,5 +1,9 @@
 2018-01-24  Joseph Myers  <joseph@codesourcery.com>
 
+	* sysdeps/unix/sysv/linux/m68k/localplt.data: Move to ....
+	* sysdeps/unix/sysv/linux/m68k/m680x0/localplt.data: ... here.
+	* sysdeps/unix/sysv/linux/m68k/coldfire/localplt.data: New file.
+
 	* sysdeps/m68k/coldfire/nofpu/math_private.h: New file.  Based on
 	MicroBlaze file.
 

sysdeps/unix/sysv/linux/m68k/coldfire/localplt.data

@@ -0,0 +1,18 @@
+libc.so: __m68k_read_tp
+libc.so: calloc
+libc.so: free
+libc.so: malloc
+libc.so: memalign
+libc.so: realloc
+libm.so: matherr
+# The main malloc is interposed into the dynamic linker, for
+# allocations after the initial link (when dlopen is used).
+ld.so: malloc
+ld.so: calloc
+ld.so: realloc
+ld.so: free
+# The TLS-enabled version of these functions is interposed from libc.so.
+ld.so: _dl_signal_error
+ld.so: _dl_catch_error
+ld.so: _dl_signal_exception
+ld.so: _dl_catch_exception