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/qemu.rst b/docs/plat/qemu.rst
index 57ed629..30ae97d 100644
--- a/docs/plat/qemu.rst
+++ b/docs/plat/qemu.rst
@@ -1,5 +1,5 @@
-Trusted Firmware-A for QEMU virt Armv8-A
-========================================
+QEMU virt Armv8-A
+=================
 
 Trusted Firmware-A (TF-A) implements the EL3 firmware layer for QEMU virt
 Armv8-A. BL1 is used as the BootROM, supplied with the -bios argument.
@@ -35,7 +35,7 @@
 
 ::
 
-    make CROSS_COMPILE=aarch64-none-elf- PLAT=qemu 
+    make CROSS_COMPILE=aarch64-none-elf- PLAT=qemu
 
 To start (QEMU v2.6.0):