Exynos5420: Add base patch for SMDK5420

Adding the base patch for Exynos based SMDK5420.
This shall enable compilation and basic boot support for
SMDK5420.

Signed-off-by: Rajeshwari S Shinde <rajeshwari.s@samsung.com>
Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/boards.cfg b/boards.cfg
index d85d4dd..bd018ff 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -276,6 +276,7 @@
 Active  arm         armv7          exynos      samsung         origen              origen                               -                                                                                                                                 Chander Kashyap <k.chander@samsung.com>
 Active  arm         armv7          exynos      samsung         smdk5250            smdk5250                             -                                                                                                                                 Chander Kashyap <k.chander@samsung.com>
 Active  arm         armv7          exynos      samsung         smdk5250            snow                                 -                                                                                                                                 Rajeshwari Shinde <rajeshwari.s@samsung.com>
+Active  arm         armv7          exynos      samsung         smdk5420            smdk5420                                 -                                                                                                                                 Rajeshwari Shinde <rajeshwari.s@samsung.com>
 Active  arm         armv7          exynos      samsung         smdkv310            smdkv310                             -                                                                                                                                 Chander Kashyap <k.chander@samsung.com>
 Active  arm         armv7          exynos      samsung         trats               trats                                -                                                                                                                                 Lukasz Majewski <l.majewski@samsung.com>
 Active  arm         armv7          exynos      samsung         trats2              trats2                               -                                                                                                                                 Piotr Wilczek <p.wilczek@samsung.com>