Update MVS driver to address evrc codec properly
-MVS driver is updated to support evrc codec.MVS_MAX_VOC_PKT_SIZE size
 incresed to 640 to support PCM WB for 8660 targets.Unfortunately
 7630 modem do not support PCM WB but the app changes effected all
 the targets where modem expecting the packet size as 320 but 7630
 application is sending packet size of 640
 increse in PKT size 7630,modem not receving the packet info since
 modem expecting PKT size 320 only.
-To address this issue Added new structure q5v2_msm_audio_mvs_frame
 and variable Q5V2_MVS_MAX_VOC_PKT_SIZE.
 Updated the EVRC rate info properly.