fix: Fix missing titles for AM65 performance guide

Currently, titles are not rendered corrently for AM65X performance guide, this
is due to Linux performance guide explicitly including the RT Linux performance
guide and thus messing with title hierarchy. To fix this, remove Linux performance
guide since all benchmarking is carried out on RT Linux kernel and include RT Linux
performance guide using toctree derective.

Signed-off-by: Judith Mendez <[email protected]>

Author: jmenti

configs/AM65X/AM65X_linux_toc.txt

@@ -15,7 +15,8 @@ devices/AM65X/linux/Release_Specific
 devices/AM65X/linux/Release_Specific_Release_Notes
 devices/AM65X/linux/Release_Specific_Yocto_layer_Configuration
 devices/AM65X/linux/Release_Specific_Migration_Guide
-devices/AM65X/linux/Release_Specific_Performance_Guide
+devices/AM65X/linux/Release_Specific_Kernel_Performance_Guide
+devices/AM65X/linux/RT_Linux_Performance_Guide
 devices/AM65X/linux/Release_Specific_Supported_Platforms_and_Versions
 linux/Foundational_Components
 linux/Foundational_Components_U-Boot

…Specific_RT_Kernel_Performance_Guide.rst …65X/linux/RT_Linux_Performance_Guide.rstsource/devices/AM65X/linux/_Release_Specific_RT_Kernel_Performance_Guide.rst renamed to source/devices/AM65X/linux/RT_Linux_Performance_Guide.rst source/devices/AM65X/linux/_Release_Specific_RT_Kernel_Performance_Guide.rst renamed to source/devices/AM65X/linux/RT_Linux_Performance_Guide.rst

@@ -6,7 +6,7 @@ Release Specific
    :maxdepth: 5
 
    Release_Specific_Release_Notes
-   Release_Specific_Performance_Guide
    Release_Specific_Yocto_layer_Configuration
    Release_Specific_Migration_Guide
+   Release_Specific_Kernel_Performance_Guide
    Release_Specific_Supported_Platforms_and_Versions

source/devices/AM65X/linux/Release_Specific.rst

@@ -0,0 +1,8 @@
+########################
+Kernel Performance Guide
+########################
+
+.. toctree::
+   :maxdepth: 4
+
+   RT_Linux_Performance_Guide