feat(linux): AM62Lx: Add performance numbers for RTC Only mode

Add power measured in RTC Only low power mode and resume latency taken
to resume from RTC Only low power mode on AM62L EVM.

Signed-off-by: Akashdeep Kaur <a-kaur@ti.com>

Author: akashdeep-ti

source/devices/AM62LX/linux/Linux_Performance_Guide.rst

@@ -38,8 +38,8 @@ System Benchmarks
 
 LMBench
 ^^^^^^^
-LMBench is a collection of microbenchmarks of which the memory bandwidth 
-and latency related ones are typically used to estimate processor 
+LMBench is a collection of microbenchmarks of which the memory bandwidth
+and latency related ones are typically used to estimate processor
 memory system performance. More information about lmbench at
 https://lmbench.sourceforge.net/whatis_lmbench.html and
 https://lmbench.sourceforge.net/man/lmbench.8.html
@@ -186,7 +186,7 @@ Dhrystone is a core only benchmark that runs from warm L1 caches in all
 modern processors. It scales linearly with clock speed.
 
 Please take note, different run may produce different slightly results.
-This is advised to run this test multiple times in order to get maximum 
+This is advised to run this test multiple times in order to get maximum
 performance numbers.
 
 Execute the benchmark with the following:
@@ -485,7 +485,7 @@ CPSW/CPSW2g/CPSW3g Ethernet Driver
 - CPSW2g: AM65x, J7200, J721e, J721S2, J784S4, J742S2
 - CPSW3g: AM64x, AM62x, AM62ax, AM62px
 
-.. rubric::  TCP Bidirectional Throughput 
+.. rubric::  TCP Bidirectional Throughput
    :name: CPSW2g-tcp-bidirectional-throughput
 
 .. csv-table:: CPSW2g TCP Bidirectional Throughput
@@ -689,7 +689,7 @@ The performance numbers were captured using the following:
 
 USB Driver
 ----------
- 
+
 USB Device Controller
 ^^^^^^^^^^^^^^^^^^^^^
 
@@ -710,7 +710,7 @@ Power Performance
 ^^^^^^^^^^^^^^^^^
 
 These are power measurements taken while the device is in various low power modes like
-Deep Sleep and RTC Only + DDR.
+Deep Sleep, RTC Only + DDR, and RTC Only.
 
 .. csv-table:: Deep Sleep Power Performance
      :header: "Rail name","Rail voltage(V)","Power (mW)"
@@ -736,12 +736,25 @@ Deep Sleep and RTC Only + DDR.
      "vdd_rtc_1v8", "1.80", "0.02"
      "Total"," ","3.62"
 
+.. csv-table:: RTC Only Power Performance
+     :header: "Rail name","Rail voltage(V)","Power (mW)"
+
+     "vdd_core", "0.00", "0.00"
+     "soc_dvdd_1v8", "0.00", "0.00"
+     "soc_dvdd_3v3", "0.00", "0.00"
+     "vdda_1v8", "0.00", "0.00"
+     "vdd_lpddr4_pmic2", "0.00", "0.00"
+     "vdd_rtc", "0.75", "0.02"
+     "vdd_rtc_1v8", "1.80", "0.01"
+     "Total"," ","0.04"
+
 Resume Latency Performance
 ^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 .. csv-table:: LPM Resume Latency Performance
    :header: "Low Power Mode","Total Resume Latency (ms)"
 
+   "RTC Only", "Full normal boot time (~seconds)"
    "RTC Only + DDR", "456.44"
    "Deep Sleep", "109.96"