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/socionext-uniphier.rst b/docs/plat/socionext-uniphier.rst
index 37cab3b..82b9b50 100644
--- a/docs/plat/socionext-uniphier.rst
+++ b/docs/plat/socionext-uniphier.rst
@@ -1,6 +1,5 @@
-Trusted Firmware-A for Socionext UniPhier SoCs
-==============================================
-
+Socionext UniPhier
+==================
 
 Socionext UniPhier Armv8-A SoCs use Trusted Firmware-A (TF-A) as the secure
 world firmware, supporting BL2 and BL31.