tc-microblaze.c - int compare for X_add_number.

tc-microblaze.c - int compare for X_add_number.

The range check should be checking for the range
ffffffff80000000..7fffffff, not ffffffff70000000.

This patch has been tested for years of AMD Xilinx Yocto
releases as part of the following patch set:

https://github.com/Xilinx/meta-xilinx/tree/master/meta-microblaze/recipes-devtools/binutils/binutils

Signed-off-by: nagaraju <nagaraju.mekala@amd.com>
Signed-off-by: Neal Frager <neal.frager@amd.com>
Signed-off-by: Michael J. Eager <eager@eagercon.com>