docs(linux): AM62X: Update PREEMPT_RT perf numbers

Update the AM62x latency numbers for the SDK 10.1 release

Signed-off-by: Bryan Brattlof <[email protected]>

source/devices/AM62X/linux/RT_Linux_Performance_Guide.rst

@@ -55,15 +55,20 @@ It is one of the most frequently used tools for evaluating the relative performa
 Some performance tests which use Cyclictest are System benchmarking, Latency debugging with tracing and
 approximating application performance.
 
-Test command for running stress-ng and cyclictest together
+Test commands used for running stress-ng and cyclictest together
 
-``stress-ng --cpu-method=all -c 4 &``
+.. code:: console
 
-``cyclictest -m -Sp98 -D6h -h400 -i200 -q``
+   stress-ng --cpu-method=all -c 4 &
+   cyclictest -m -Sp80 -D6h -h400 -i200 -M -q
+
+The latencies observed with this SDK are summarized below:
 
 .. csv-table::
-    :header: "Latencies","am62xx_sk:per-core"
+   :header: "Latencies","CPU 0","CPU 1","CPU 2","CPU 3"
+
+   "Minimum (usec)","5","5","4","4"
+   "Average (usec)","7","5","6","6"
+   "Maximum (usec)","66","41","73","70"
 
-    "Minimum (usec)","5,5,4,4"
-    "Average (usec)","7,5,6,6"
-    "Maximum (usec)","69,51,62,50"
+.. image:: img/rt-cpu-method-all-latency-histogram.png