fix(AM57X): add DSS doc entry in ToC

Add DSS doc section in AM57x Table of Contents as the doc is valid for
the platform. The DSS section was present in the 06.03 SDKs but got
omitted later.

Signed-off-by: Beleswar Padhi <[email protected]>

Author: 3V3RYONE

configs/AM57X/AM57X_linux_toc.txt

@@ -53,6 +53,7 @@ linux/Foundational_Components/Kernel/Kernel_Drivers/Camera/VPFE
 linux/Foundational_Components/Kernel/Kernel_Drivers/Camera/VIP
 linux/Foundational_Components/Kernel/Kernel_Drivers/Crypto/SA2UL_OMAP
 linux/Foundational_Components/Kernel/Kernel_Drivers/DCAN
+linux/Foundational_Components/Kernel/Kernel_Drivers/Display/DSS
 linux/Foundational_Components/Kernel/Kernel_Drivers/Display/LCDC
 linux/Foundational_Components/Kernel/Kernel_Drivers/GPIO
 linux/Foundational_Components/Kernel/Kernel_Drivers/I2C