board: mx6sabreauto: Add board_fit_config_name_match to support FIT in SPL

This matches one of the following three boards (or fails):
 - imx6q-sabreauto
 - imx6qp-sabreauto
 - imx6dl-sabreauto

Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
diff --git a/board/freescale/mx6sabreauto/mx6sabreauto.c b/board/freescale/mx6sabreauto/mx6sabreauto.c
index c1bef85..c8f1263 100644
--- a/board/freescale/mx6sabreauto/mx6sabreauto.c
+++ b/board/freescale/mx6sabreauto/mx6sabreauto.c
@@ -1097,3 +1097,21 @@
 	board_init_r(NULL, 0);
 }
 #endif
+
+#ifdef CONFIG_SPL_LOAD_FIT
+int board_fit_config_name_match(const char *name)
+{
+	if (is_mx6dq()) {
+		if (!strcmp(name, "imx6q-sabreauto"))
+			return 0;
+	} else if (is_mx6dqp()) {
+		if (!strcmp(name, "imx6qp-sabreauto"))
+			return 0;
+	} else if (is_mx6dl()) {
+		if (!strcmp(name, "imx6dl-sabreauto"))
+			return 0;
+	}
+
+	return -1;
+}
+#endif