Add support for Congatec Conga-QEVAl board

Add minimal support (only boot from mmc device) for the Congatec
Conga-QEVAl Evaluation Carrier Board with conga-Qmx6q (i.MX6 Quad
processor) module.

Signed-off-by: Leo Sartre <lsartre@adeneo-embedded.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Acked-by: Otavio Salvador <otavio@ossystems.com.br>
diff --git a/MAINTAINERS b/MAINTAINERS
index e4113d8..d3b7e1a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -893,6 +893,10 @@
 
 	omap3_overo	ARM ARMV7 (OMAP3xx SoC)
 
+Leo Sartre <lsartre@adeneo-embedded.com>
+
+	cgtqmx6qeval		i.MX6Q
+
 Jens Scharsig <esw@bus-elektronik.de>
 
 	eb_cpux9k2	ARM920T (AT91RM9200 SoC)