doc: Fix platform port inclusion

This patch:

- Adds any leftover platform ports that were not having their
  documentation built (not in the index.rst table of contents)
- Corrects a handful of RST formatting errors that cause poor
  rendering
- Reorders the list of platforms so that they are displayed
  in alphabetical order

Change-Id: If8c135a822d581c3c5c4fca2936d501ccfd2e94c
Signed-off-by: Paul Beesley <paul.beesley@arm.com>

docs/plat/hikey.rst

-Description
-===========
+HiKey
+=====
 
 HiKey is one of 96boards. Hisilicon Kirin6220 processor is installed on HiKey.
 
 More information are listed in `link`_.
 
 How to build
-============
+------------
 
 Code Locations
---------------
+~~~~~~~~~~~~~~
 
 -  Trusted Firmware-A:
    `link <https://github.com/ARM-software/arm-trusted-firmware>`__
@@ -33,7 +33,7 @@ Code Locations
    `link <https://github.com/96boards-hikey/atf-fastboot/tree/master>`__
 
 Build Procedure
----------------
+~~~~~~~~~~~~~~~
 
 -  Fetch all the above repositories into local host.
    Make all the repositories in the same ${BUILD\_PATH}.

docs/plat/hikey960.rst

-Description
-===========
+HiKey960
+========
 
 HiKey960 is one of 96boards. Hisilicon Hi3660 processor is installed on HiKey960.
 
 More information are listed in `link`_.
 
 How to build
-============
+------------
 
 Code Locations
---------------
+~~~~~~~~~~~~~~
 
 -  Trusted Firmware-A:
    `link <https://github.com/ARM-software/arm-trusted-firmware>`__
@@ -30,7 +30,7 @@ Code Locations
    `link <https://git.linaro.org/uefi/uefi-tools.git>`__
 
 Build Procedure
----------------
+~~~~~~~~~~~~~~~
 
 -  Fetch all the above 5 repositories into local host.
    Make all the repositories in the same ${BUILD\_PATH}.

docs/plat/index.rst

@@ -7,24 +7,28 @@ Platform Ports
    :numbered:
 
    allwinner
+   meson-gxbb
+   meson-gxl
    fvp_ve
-   imx8
-   imx8m
+   hikey
+   hikey960
+   intel-agilex
    intel-stratix10
-   ls1043a
    marvell/index
-   meson-gxbb
-   meson-gxl
    mt8183
    nvidia-tegra
+   warp7
+   imx8
+   imx8m
+   ls1043a
+   poplar
    qemu
+   rpi3
    rcar-gen3
    rockchip
-   rpi3
    socionext-uniphier
-   stm32mp1
    synquacer
+   stm32mp1
    ti-k3
-   warp7
    xilinx-versal
    xilinx-zynqmp

docs/plat/intel-agilex.rst

@@ -67,6 +67,7 @@ Boot trace
 ----------
 
 ::
+
         INFO:    DDR: DRAM calibration success.
         INFO:    ECC is disabled.
         NOTICE:  BL2: v2.1(debug)

docs/plat/intel-stratix10.rst

@@ -67,6 +67,7 @@ Boot trace
 ----------
 
 ::
+
          INFO:    DDR: DRAM calibration success.
          INFO:    ECC is disabled.
          INFO:    Init HPS NOC's DDR Scheduler.

docs/plat/poplar.rst

-Description
-===========
+Poplar
+======
 
 Poplar is the first development board compliant with the 96Boards Enterprise
 Edition TV Platform specification.
@@ -35,10 +35,10 @@ must happen prior to invoking Trusted Firmware-A:
     l-loader --> Trusted Firmware-A --> u-boot
 
 How to build
-============
+------------
 
 Code Locations
---------------
+~~~~~~~~~~~~~~
 
 -  Trusted Firmware-A:
    `link <https://github.com/ARM-software/arm-trusted-firmware>`__
@@ -50,7 +50,7 @@ Code Locations
    `link <http://git.denx.de/u-boot.git>`__
 
 Build Procedure
----------------
+~~~~~~~~~~~~~~~
 
 -  Fetch all the above 3 repositories into local host.
    Make all the repositories in the same ${BUILD\_PATH}.
@@ -89,7 +89,7 @@ The system will boot into a u-boot shell which you can then use to write the
 working firmware to eMMC.
 
 Boot trace
-==========
+----------
 
 ::