platform: add ls1028ardb links

Signed-off-by: Sahil Malhotra <sahil.malhotra@nxp.com>
Reviewed-by: Joakim Bech <joakim.bech@linaro.org>
diff --git a/general/platforms.rst b/general/platforms.rst
index eeebd25..66e40a4 100644
--- a/general/platforms.rst
+++ b/general/platforms.rst
@@ -68,6 +68,11 @@
      - Yes
      - Yes
 
+   * - `NXP ls1028ardb <https://www.nxp.com/pages/design/qoriq-developer-resources/ls1028a-reference-design-board:LS1028ARDB>`_
+     - ``PLATFORM=ls-ls1028ardb``
+     - Yes
+     - Yes
+
    * - `NXP ls1088ardb <http://www.nxp.com/products/microcontrollers-and-processors/power-architecture-processors/qoriq-platforms/developer-resources/qoriq-ls1088a-reference-design-board:LS1088A-RDB>`_
      - ``PLATFORM=ls-ls1088ardb``
      - Yes