doc: board: ti: Optimize sources references

We have duplication of sources which makes it hard to sustain across the
board, but at the same time, we'd like to ensure readers get specific
information without having to cross refer to different documentation to
get piecemeal information that they need to put together.

Reviewed-by: Neha Malcom Francis <n-francis@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Nishanth Menon <nm@ti.com>

doc/board/ti/am62x_sk.rst

@@ -115,21 +115,10 @@ Below is the pictorial representation of boot flow:
 
 Sources:
 --------
-1. Trusted Firmware-A:
-	Tree: https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git/
-	Branch: master
 
-2. OP-TEE:
+.. include::  k3.rst
-	Tree: https://github.com/OP-TEE/optee_os.git
+    :start-after: .. k3_rst_include_start_boot_sources
-	Branch: master
+    :end-before: .. k3_rst_include_end_boot_sources
-
-3. U-Boot:
-	Tree: https://source.denx.de/u-boot/u-boot
-	Branch: master
-
-4. TI Linux Firmware:
-	Tree: git://git.ti.com/processor-firmware/ti-linux-firmware.git
-	Branch: ti-linux-firmware
 
 Build procedure:
 ----------------

doc/board/ti/am65x_evm.rst

@@ -117,21 +117,10 @@ instead use Falcon boot flow to reduce boot time.
 
 Sources:
 --------
-1. Trusted Firmware-A:
-        Tree: https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git/
-        Branch: master
 
-2. OP-TEE:
+.. include::  k3.rst
-        Tree: https://github.com/OP-TEE/optee_os.git
+    :start-after: .. k3_rst_include_start_boot_sources
-        Branch: master
+    :end-before: .. k3_rst_include_end_boot_sources
-
-3. U-Boot:
-        Tree: https://source.denx.de/u-boot/u-boot
-        Branch: master
-
-4. TI Linux Firmware:
-        Tree: git://git.ti.com/processor-firmware/ti-linux-firmware.git
-        Branch: ti-linux-firmware
 
 Build procedure:
 ----------------

doc/board/ti/j7200_evm.rst

@@ -120,21 +120,10 @@ Below is the pictorial representation of boot flow:
 
 Sources:
 --------
-1. Trusted Firmware-A:
-	Tree: https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git/
-	Branch: master
 
-2. OP-TEE:
+.. include::  k3.rst
-	Tree: https://github.com/OP-TEE/optee_os.git
+    :start-after: .. k3_rst_include_start_boot_sources
-	Branch: master
+    :end-before: .. k3_rst_include_end_boot_sources
-
-3. U-Boot:
-	Tree: https://source.denx.de/u-boot/u-boot
-	Branch: master
-
-4. TI Linux Firmware:
-	Tree: git://git.ti.com/processor-firmware/ti-linux-firmware.git
-	Branch: ti-linux-firmware
 
 Build procedure:
 ----------------

doc/board/ti/j721e_evm.rst

@@ -130,21 +130,10 @@ support. Below is the pictorial representation of boot flow:
 
 Sources:
 --------
-1. Trusted Firmware-A:
-	Tree: https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git/
-	Branch: master
 
-2. OP-TEE:
+.. include::  k3.rst
-	Tree: https://github.com/OP-TEE/optee_os.git
+    :start-after: .. k3_rst_include_start_boot_sources
-	Branch: master
+    :end-before: .. k3_rst_include_end_boot_sources
-
-3. U-Boot:
-	Tree: https://source.denx.de/u-boot/u-boot
-	Branch: master
-
-4. TI Linux Firmware:
-	Tree: git://git.ti.com/processor-firmware/ti-linux-firmware.git
-	Branch: ti-linux-firmware
 
 Build procedure:
 ----------------

doc/board/ti/k3.rst

@@ -111,6 +111,8 @@ All scripts and code needed to build the `tiboot3.bin`, `tispl.bin` and
 `u-boot.img` for all K3 SoCs can be located at the following places
 online
 
+.. k3_rst_include_start_boot_sources
+
 * **Das U-Boot**
 
   | **source:** https://source.denx.de/u-boot/u-boot.git
@@ -131,6 +133,8 @@ online
   | **source:** https://git.ti.com/git/processor-firmware/ti-linux-firmware.git
   | **branch:** ti-linux-firmware
 
+.. k3_rst_include_end_boot_sources
+
 Build Procedure
 ---------------