xt925: Add baseband and firmwares from 9.8.2Q-50-XT925_VQLM-21

This update adds baseband and firmwares to system, this allow us to have
updated baseband while other partitions remains untouchted.  Contains
VANQUISH_U_BP_100700.220.65.33P.

Change-Id: Idfe264efe748fe3a1e612f03701c1c4be744b6e5