Yealink 87.* firmware broken cipher for T3x and T4x family

[Stell0]

With Yealink v87 firmware, other models of families T3x and T4x are affected by the problem that make the SRTP fail when using AES_256_CM_HMAC_SHA1_80.
Previously only T34U, T34W, T44U, and T44W where affected.

How to reproduce:

• Use a phone of family T3x or T4x
• Configure the phone for SRTP
• Use firmware 87.x
• make a call

Expected result:

• You should have audio

Acual result:

• audio doesn't work

[Stell0]

Test case:

• verify issue is no more reproducible
• mae sure that other models using firmware 86.x still work

Note: The changes doesn't apply to phones that has template custom. If a template custom for a yealink phone is made, Tancredi will use that template and will ignore the version of template with this fix