configs: at91sam9x5ek: new additional defconfigs

This commit:

 - Adds a development rootfs defconfig for the at91sam9x5ek board for
   NAND-based configurations.

 - Adds SD-card based configurations for the at91sam9x5ek board, both a
   minimal one and development one.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
[Thomas: add at91sam9x5ek_mmc_defconfig to have all four combinations:
NAND minimal, NAND development, SD minimal, SD development.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 560b540..1954eaa 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -66,6 +66,9 @@
 at91sam9g45m10ek_defconfig: *defconfig
 at91sam9rlek_defconfig: *defconfig
 at91sam9x5ek_defconfig: *defconfig
+at91sam9x5ek_dev_defconfig: *defconfig
+at91sam9x5ek_mmc_defconfig: *defconfig
+at91sam9x5ek_mmc_dev_defconfig: *defconfig
 atmel_sama5d2_xplained_mmc_defconfig: *defconfig
 atmel_sama5d2_xplained_mmc_dev_defconfig: *defconfig
 atmel_sama5d3_xplained_defconfig: *defconfig