ARM: imx6: mx6sabre-common: Search for boot components in /boot too

Some root filesystem configurations do not have separate /boot partition,
but rather place kernel, DT, scripts into /boot directory. Search the /boot
directory for these boot components in case they are not found in /, which
is the old behavior.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Ye Li <ye.li@nxp.com>
Cc: uboot-imx <uboot-imx@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
diff --git a/include/configs/mx6sabre_common.h b/include/configs/mx6sabre_common.h
index 7355329..ac579f3 100644
--- a/include/configs/mx6sabre_common.h
+++ b/include/configs/mx6sabre_common.h
@@ -73,11 +73,14 @@
 	"mmcargs=setenv bootargs console=${console},${baudrate} " \
 		"root=PARTUUID=${uuid} rootwait rw\0" \
 	"loadbootscript=" \
-		"load mmc ${mmcdev}:${mmcpart} ${loadaddr} ${script};\0" \
+		"load mmc ${mmcdev}:${mmcpart} ${loadaddr} ${script} || " \
+		"load mmc ${mmcdev}:${mmcpart} ${loadaddr} boot/${script};\0" \
 	"bootscript=echo Running bootscript from mmc ...; " \
 		"source\0" \
-	"loadimage=load mmc ${mmcdev}:${mmcpart} ${loadaddr} ${image}\0" \
-	"loadfdt=load mmc ${mmcdev}:${mmcpart} ${fdt_addr} ${fdtfile}\0" \
+	"loadimage=load mmc ${mmcdev}:${mmcpart} ${loadaddr} ${image} || " \
+		"load mmc ${mmcdev}:${mmcpart} ${loadaddr} boot/${image}\0" \
+	"loadfdt=load mmc ${mmcdev}:${mmcpart} ${fdt_addr} ${fdtfile} || " \
+		"load mmc ${mmcdev}:${mmcpart} ${fdt_addr} boot/${fdtfile}\0" \
 	"mmcboot=echo Booting from mmc ...; " \
 		"run finduuid; " \
 		"run mmcargs; " \