lib: iomap: Add MSM RTB support

The ioread* and the iowrite* functions and not inlined and hence
the RTB logs end up containing the ioread and iowrite functions
themselves and not the ones invoking them.

Add RTB support to the ioread*and iowrite* functions so that we can
get meaningful RTB logs.

Note that to avoid multiple RTB logs for ioread* and iowrite*
functions, read*_no_log and write*_no_log macros are added.

Change-Id: I2315d44c4dfbeee6be4a52f21bf4a20dd9508597
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
Signed-off-by: David Keitel <dkeitel@codeaurora.org>