wl18xx: fix fm_coex parameters configuration

Wrong fm_coex parameters were set during wl18xx
init phase, fix it.

Signed-off-by: Ziv Riesel <zivriesel@ti.com>
Signed-off-by: Victor Goldenshtein <victorg@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>