hw/char/serial: Rename I/O read/write trace events
The serial_mm_read/write() handlers from the TYPE_SERIAL_MM device
call the serial_ioport_read/write() handlers with shifted offset.
When looking at the trace events from this MMIO device, it is
confusing to read the accesses as I/O. Simplify using generic
trace event names which make sense the various uses.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <
20200907015535.827885-5-f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>