msm: Don't use RTB logging for big endian operations

There is something strange in the big-endian io operations
that doesn't work with the RTB logging macros. Switch the
big-endian operations to no_log since they are unlikely
to be used in conjunction with RTB anyway.

Change-Id: Ic0dedbad12279907fc38e079db1b8c7bf662636b
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>