msm_rtb: Add _no_log variants

If the RTB driver is disabled (QCOM_RTB), the _no_log
variants of I/O (reads and writes) behaves exactly as
that of the I/O operations in asm/io.h. However, if
the driver is enabled, the regular reads' and writes'
definitions are overridden with the 'log' varaints,
while the _no_log variants wouldn't trace the I/O.

Change-Id: Ie80f37e3a6f6a4b72ba076f028ab9ada4680a710
Signed-off-by: Raghavendra Rao Ananta <rananta@codeaurora.org>