imx: Add support for the SabreSD shipped with i.MX6DL

The SabreSD platform is available with i.MX6Q or i.MX6DL. This patch adds the
support of the i.MX6DL. The config file and the board directory are renamed
to remove the reference to the MX6Q.

Signed-off-by: Pierre Aubert <p.aubert@staubli.com>
CC: Stefano Babic <sbabic@denx.de>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
diff --git a/include/configs/mx6qsabreauto.h b/include/configs/mx6qsabreauto.h
index 76f7812..a396acf 100644
--- a/include/configs/mx6qsabreauto.h
+++ b/include/configs/mx6qsabreauto.h
@@ -30,7 +30,7 @@
 #define CONFIG_MXC_USB_PORTSC	(PORT_PTS_UTMI | PORT_PTS_PTW)
 #define CONFIG_MXC_USB_FLAGS	0
 
-#include "mx6qsabre_common.h"
+#include "mx6sabre_common.h"
 
 #define CONFIG_SYS_FSL_USDHC_NUM	2
 #if defined(CONFIG_ENV_IS_IN_MMC)