Merge changes Ia9edf908,I22a138c0,Ia590e36d,Ie29a02ce,Ic3b7ed55 into kernel.lnx.4.9.r12-rel

* changes:
  mmc: cmdq: Add timeout in case of mmc_cmdq_halt_on_empty_queue()
  mmc: add more trace logs and debug information
  mmc: host: cmdq: Check if tag info extraced from CQTERRI is valid
  mmc: CMDQ Error handling context syncronization
  mmc: Fix error handling path when there is an active Discard (DCMD)