msm: mhi-dev: Send channel state broadcasts for QRTR channels

Set the channel attribute for QRTR channels (MHI_CLIENT_IPCR_OUT
and MHI_CLIENT_IPCR_IN) so that QRTR client gets the uevent
broadcast when the channel state changes. Change the naming
for the structure to mhi_chan_attr_table since kernel clients are
also configured using the same structure.

Change-Id: I40232a09c27d7410d772055448d0354fb0c359b1
Signed-off-by: Gauri Joshi <gaurjosh@codeaurora.org>