wcte13xp: wcaxx: Fix broken devicetype attributes

struct dahdi_device.devicetype was set incorrectly in both drivers. This caused
the vpm module to not show up after the device name when reading this field
from a spanstat.

Reported-by: Charles Moye <cmoye@digium.com>
Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>
wcte13xp: Update firmware to 0x780017

This firmware adds support for the te131 and te132 products.

Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>
wcte13xp: Add support for te131 and te132 products

These are similar to te133 and te134 but without integrated echo cancel.

Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>