doc: Reformat platform port documents

The platform port documents are not very standardised right now and
they don't integrate properly into the document tree so:

1) Make sure each port has a proper name and title (incl. owner)
2) Correct use of headings, subheadings, etc in each port
3) Resolve any naming conflicts between documents

Change-Id: I4c2da6f57172b7f2af3512e766ae9ce3b840b50f
Signed-off-by: Paul Beesley <paul.beesley@arm.com>
diff --git a/docs/plat/ti-k3.rst b/docs/plat/ti-k3.rst
index 6515c64..4843227 100644
--- a/docs/plat/ti-k3.rst
+++ b/docs/plat/ti-k3.rst
@@ -1,15 +1,17 @@
-Trusted Firmware-A for Texas Instruments K3 SoCs
-================================================
+Texas Instruments K3
+====================
 
 Trusted Firmware-A (TF-A) implements the EL3 firmware layer for Texas Instruments K3 SoCs.
 
 Boot Flow
 ---------
 
-R5(U-Boot) --> TF-A BL31 --> BL32(OP-TEE) --> TF-A BL31 --> BL33(U-Boot) --> Linux
+::
+
+   R5(U-Boot) --> TF-A BL31 --> BL32(OP-TEE) --> TF-A BL31 --> BL33(U-Boot) --> Linux
                                                        \
-                                                Optional direct to Linux boot
-                                                         \
+                                                   Optional direct to Linux boot
+                                                           \
                                                            --> BL33(Linux)
 
 Texas Instruments K3 SoCs contain an R5 processor used as the boot master, it