fw-api: CL 17453007 - update fw common interface files

HTT stats: add new STREAMING_STATS_REQ,IND msg defs and GEN_MPDUS stats TLVs
Define a HTT_H2T STREAMING_STATS_REQ message that the host can use to enable ongoing production by the target of different types of streaming stats. Define the HTT_T2H STREAMING_STATS_IND that uploads the ongoing stats from the target. Define a GEN_MPDUS stats TLV that indicates how many times the targets GEN_MPDUS operation met / missed the specifications for the service interval and burst size. Define a GEN_MPDUS_DETAILS stats TLV that provides further visibility regarding how the targets service interval and burst size compared to the specified/expected values.

Change-Id: I2115978b510ed06e043e9edb17826bfdbb9490aa
CRs-Fixed: 2262693