When get length by HTT_WDI_IPA_OP_RESPONSE_RSP_LEN_GET,
the input msg_word needs to shift 4Bytes.
Failure length check will cause ipa uc event without processing.
Regression cause Iddf2df0fd65f5b33b54f1a608cdd34e400c0e03c.
Change-Id: I41a44ae26f84d974cbd3242f4454ec6068d7b68b
CRs-Fixed: 2206296