[FIX] sms: correctly take mobile or phone as valid number fields for partners

Partner / Contact model may hold valid mobile numbers in mobile or phone
fields.

LINKS

Task 1997464

closes odoo/odoo#35599

Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>

addons/sms/models/res_partner.py

@@ -12,3 +12,8 @@ class ResPartner(models.Model):
             SMS recipients on partners are the partners themselves.
         """
         return self
+
+    def _sms_get_number_fields(self):
+        """ This method returns the fields to use to find the number to use to
+        send an SMS on a record. """
+        return ['mobile', 'phone']