wl127x/wl128x: update firmwares

Update the wl127x and wl128x firmwares to *.3.10.0.133 for single-role
and *.5.7.0.42 for multi-role.

Signed-off-by: Luciano Coelho <coelho@ti.com>
wl18xx: add version 2 of the wl18xx firmware

There is a new API in the latest version of the wl18xx firmware.  Add
the new firmware with a new filename (wl18xx-fw-2.bin), which
corresponds to firmware revision 8.5.0.0.55.

Signed-off-by: Luciano Coelho <coelho@ti.com>
wl18xx: add default configuration binary

The wl18xx-conf.bin contains a binary configuration that is used by
the driver to configure the firmware.

Signed-off-by: Luciano Coelho <coelho@ti.com>