rpmsg: glink: Remove chunk size word align warning

It is possible for the chunk sizes coming from the non RPM remote procs
to not be word aligned. Remove the alignment warning and continue to
read from the FIFO so execution is not stalled.

Change-Id: If9ba9c65aa9ba98463ad28e86ac6043b452b7dda
Signed-off-by: Chris Lew <clew@codeaurora.org>