dt-bindings: arm: msm: Introduce qcom,qsee_irq bindings

This snapshot is taken as of msm-4.14 'commit <f63747b877cd> ("Merge
"UPSTREAM commit 'eec334785ba1a5112db705ddcf5577e4bccc6009' 09/30"")'.

This snapshot adds the device tree bindings for the qsee_ipc_irq
driver.

Change-Id: If63eb2fa769f938c9e858b73edeceefda62d93cb
Signed-off-by: Chris Lew <clew@codeaurora.org>