feat(security): Generalize boot flow page for non-AM64x SoCs

Currently, the secure boot section is tailored for AM64x. But the same
information is applicable to non-AM64x SoCs, such as AM62x, AM62P etc. Therefore
generalize the page and add it these other devices' TOCs.

Signed-off-by: Suhaas Joshi <s-joshi@ti.com>

Author: jsuhaas22

configs/AM62PX/AM62PX_linux_toc.txt

@@ -50,6 +50,8 @@ linux/Foundational_Components/U-Boot/Apps-SPL-Debug-OpenOCD
 #linux/Foundational_Components/U-Boot/Apps-Load-in-CCS
 #linux/Foundational_Components/U-Boot/Apps-TroubleShooting
 
+linux/Foundational_Components_Secure_Boot
+
 linux/Foundational_Components_Kernel
 linux/Foundational_Components_Kernel_Drivers
 #linux/Foundational_Components/Kernel/Kernel_Drivers/ADC

configs/AM62X/AM62X_linux_toc.txt

@@ -49,6 +49,8 @@ linux/Foundational_Components/U-Boot/Apps-SPL-Debug-OpenOCD
 #linux/Foundational_Components/U-Boot/Apps-Load-in-CCS
 #linux/Foundational_Components/U-Boot/Apps-TroubleShooting
 
+linux/Foundational_Components_Secure_Boot
+
 linux/Foundational_Components_Kernel
 linux/Foundational_Components_Kernel_Drivers
 #linux/Foundational_Components/Kernel/Kernel_Drivers/ADC

source/linux/Foundational_Components_Secure_Boot.rst

@@ -195,9 +195,9 @@ HS Boot Flow Tools
 
 U-boot:
 
-    The ti-u-boot source is a project used to create tiboot3.bin, tispl.bin, and u-boot.img. To create  tiboot3.bin for AM64x family devices, u-boot builds R5 SPL and
+    The ti-u-boot source is a project used to create tiboot3.bin, tispl.bin, and u-boot.img. To create  tiboot3.bin for Sitara family devices, u-boot builds R5 SPL and
     binman packages it in a `tiboot3.bin` image. To build A53 SPL, binman takes ATF (bl31.bin), OPTEE (bl32.bin), A53 SPL, and A53 DTBs and packages
-    them in a `tispl.bin` image. The openssl library can then then be used to sign each component as specified in k3-am64x-binman.dtsi.
+    them in a `tispl.bin` image. The openssl library can then then be used to sign each component as specified in k3-<soc>-binman.dtsi.
 
     .. code-block:: console
 
@@ -246,7 +246,7 @@ OPTEE:
 Ti-linux-firmware:
 
     The ti-linux-firmware is a TI repository where all firmware releases are stored. Firmwares for a device family can also be found in the pre-built SDK
-    under <path-to-tisdk>/board-support/prebuilt-images/am64xx-evm. Binman expects to find the device firmware with the following appended to u-boot build command:
+    under <path-to-tisdk>/board-support/prebuilt-images/<evm>. Binman expects to find the device firmware with the following appended to u-boot build command:
     BINMAN_INDIRS=<path-to-tisdk>/board-support/prebuilt-images, and expects to find a ti-sysfw directory in this path.
 
     .. code-block:: console