mx6: use CONFIG_MX6 instead of CONFIG_MX6Q

Use CONFIG_MX6 when the particular processor
variant isn't important.

Reserve the use of CONFIG_MX6Q to
specifically test for quad cores variant.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
diff --git a/include/configs/mx6qsabre_common.h b/include/configs/mx6qsabre_common.h
index fa38d79..50f3b01 100644
--- a/include/configs/mx6qsabre_common.h
+++ b/include/configs/mx6qsabre_common.h
@@ -17,6 +17,7 @@
 #ifndef __MX6QSABRE_COMMON_CONFIG_H
 #define __MX6QSABRE_COMMON_CONFIG_H
 
+#define CONFIG_MX6
 #define CONFIG_MX6Q
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DISPLAY_BOARDINFO