msm: ipa: introduce new QMI msg for IPA MHI

For supporting MHI (new driver) on LE targets to send QMI
msg to modem, we need to add following QMI header/message
in A7 which already existed/supported by modem. Then Apps
can communicate with modem with those configurations.

Change-Id: I6320bab02e68ff0cd0d6e3952cca78f4ee2a4b34
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>