fix(pm_low_power_modes): Move limitation note to limitations section

The note about SK-AM62-SIP EVM not supporting LPMs is a limitation of
low power modes, so move it to the limitations section.

Signed-off-by: Kendall Willis <[email protected]>

Author: kwillis01

source/linux/Foundational_Components/Power_Management/pm_low_power_modes.rst

@@ -8,12 +8,6 @@ Low Power Modes
 Overview
 ********
 
-.. ifconfig:: CONFIG_part_variant in ('AM62X')
-
-   .. important::
-
-      SK-AM62-SIP EVM does NOT support low power modes.
-
 The following sections describe a high-level description of the different low power modes (LPM) of the
 device. If your application requires inactive power management, you must determine which
 low power mode described below satisfies your requirements. Each mode must be evaluated
@@ -387,6 +381,12 @@ MCU Only mode using one of the supported wakeup sources.
 Limitations
 ***********
 
+.. ifconfig:: CONFIG_part_variant in ('AM62X')
+
+   .. important::
+
+      SK-AM62-SIP EVM does NOT support low power modes.
+
 HWRNG support on GP devices is incompatible with Deep Sleep and MCU Only
 modes. To test LPM on GP devices, HWRNG has to be unloaded one-time
 before running the Suspend-to-RAM command: