nds32: fix data section of linker script

Make linker script handles .data.rel sections.

Signed-off-by: Macpaul Lin <macpaul@andestech.com>
Tested-by: Macpaul Lin <macpaul@gmail.com>
Cc: Mike Frysinger <vapier@gentoo.org>

arch/nds32/cpu/n1213/u-boot.lds

@@ -41,7 +41,7 @@ SECTIONS
 	.rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
 
 	. = ALIGN(4);
-	.data : { *(.data) }
+	.data : { *(.data*) }
 
 	. = ALIGN(4);