Nokia RX-51: Do not overwrite standard $loadaddr variable

Instead of overwriting $loadaddr variable, use custom temporary
$fileloadaddr variable. So scripts can access default/original address
stored in $loadaddr at build time.

Signed-off-by: Pali Rohár <pali@kernel.org>
diff --git a/include/configs/nokia_rx51.h b/include/configs/nokia_rx51.h
index a88cfe7..99a020c 100644
--- a/include/configs/nokia_rx51.h
+++ b/include/configs/nokia_rx51.h
@@ -78,15 +78,16 @@
 	"kernaddr=0x82008000\0" \
 	"initrdaddr=0x84008000\0" \
 	"scriptaddr=0x86008000\0" \
+	"fileloadaddr=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0" \
 	"fileload=${mmctype}load mmc ${mmcnum}:${mmcpart} " \
-		"${loadaddr} ${mmcfile}\0" \
-	"kernload=setenv loadaddr ${kernaddr};" \
+		"${fileloadaddr} ${mmcfile}\0" \
+	"kernload=setenv fileloadaddr ${kernaddr};" \
 		"setenv mmcfile ${mmckernfile};" \
 		"run fileload\0" \
-	"initrdload=setenv loadaddr ${initrdaddr};" \
+	"initrdload=setenv fileloadaddr ${initrdaddr};" \
 		"setenv mmcfile ${mmcinitrdfile};" \
 		"run fileload\0" \
-	"scriptload=setenv loadaddr ${scriptaddr};" \
+	"scriptload=setenv fileloadaddr ${scriptaddr};" \
 		"setenv mmcfile ${mmcscriptfile};" \
 		"run fileload\0" \
 	"scriptboot=echo Running ${mmcscriptfile} from mmc " \