docs(linux): Power_Management: Fix MCU GPIO wakeup pin

The MCU GPIO wakeup pin was incorrect in the documentation. Updated to
specify the correct pin.

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

Author: kwillis01

source/linux/Foundational_Components/Power_Management/pm_wakeup_sources.rst

@@ -222,7 +222,7 @@ Now, under the switch node we add the following:
     .. code-block:: console
 
         root@<machine>:~# cat /proc/interrupts | grep "MCUGPIO"
-        262:          0          0          0          0      GPIO  16 Edge    -davinci_gpio  MCUGPIO
+        273:          0          0          0          0      GPIO  4 Edge    -davinci_gpio  MCUGPIO
 
 #. linux,code: Keycode to emit.
 #. gpios: the gpio required to be used as the gpio-key.
@@ -242,8 +242,8 @@ MCU GPIO wakeup can only be tested when
 overlay is loaded. Please refer to :ref:`How to enable DT overlays<howto_dt_overlays>` for more details.
 
 Once the system has entered Deep Sleep or MCU Only mode as shown in the
-:ref:`LPM section<lpm_modes>`, wakeup from MCU GPIO0_16 can be triggered
-by grounding Pin 11 on J8 MCU Header.
+:ref:`LPM section<lpm_modes>`, wakeup from MCU_SPI0_D1 can be triggered
+by grounding Pin 4 on J8 MCU Header.
 
 ********************
 Main I/O Daisy Chain