mx6_common: add secure boot support

Selecting the proper options to enable the build of the HAB tools.

Note, this support is disabled by default, one will have to select
the SECURE_BOOT configuration through menuconfig to enable it.

See doc/README.mxc_hab for more details.

Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
diff --git a/include/configs/mx6_common.h b/include/configs/mx6_common.h
index 411316d..d28654b 100644
--- a/include/configs/mx6_common.h
+++ b/include/configs/mx6_common.h
@@ -91,4 +91,13 @@
 #define CONFIG_CMD_FUSE
 #define CONFIG_MXC_OCOTP
 
+/* Secure boot (HAB) support */
+#ifdef CONFIG_SECURE_BOOT
+#define CONFIG_CSF_SIZE			0x2000
+#define CONFIG_SYS_FSL_SEC_COMPAT	4
+#define CONFIG_FSL_CAAM
+#define CONFIG_CMD_DEKBLOB
+#define CONFIG_SYS_FSL_SEC_LE
+#endif
+
 #endif