Merge branch 'rproc-linux-5.4.y' of git://git.ti.com/rpmsg/remoteproc into rpmsg-ti-linux-5.4.y

Pull in the updated remoteproc feature branch that fixes couple of issues
with the OMAP remoteproc driver. The issues fixed include restoring the
Error Recovery functionality of the DSP remote processors, and re-enables
the MMU Faults upon error recovery on all the IPU and DSP remote processors.
The Error Recovery functionality is now on-par with the 2019 LTS functionality
except for the below NOTE.

The merge also pulls in couple of other issues in the OMAP IOMMU driver
related to "BUG: sleeping function called from invalid context" and a
probe deferral warning message.

NOTE:
The MMU page tables (TTBs) are not re-allocated, the MMUs are simply
restarted preserving the same previously allocated/programmed Page Tables.

* 'rproc-linux-5.4.y' of git://git.ti.com/rpmsg/remoteproc

:
  remoteproc/omap: Trigger IOMMU during crash recovery sequence
  iommu/omap: Add registration for DT fwnode pointer
  iommu/omap: convert spinlocks to mutexes

Signed-off-by: Suman Anna <s-anna@ti.com>