Remove these local array variables and define them as static
const array in global space.
The duplicated mcs_rate table is removed automatically with this
change.
Reported-by: NPaul Stewart <pstew@chromium.org>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>