[U-Boot] Add _end symbol in SMDK6410 link script

Since we rename _end to __bss_end (commit: 44c6e6591cb) So we have add the the end symbol of u-boot image.
The patch fix SMDK6400 build error. the error information as foolowing:
pat.o -L /usr/local/arm/4.3.1-eabi-armv6/usr/bin-ccache/../lib/gcc/arm-samsung-linux-gnueabi/4.3.1 -lgcc -Map u-boot.map -o u-boot arch/arm/cpu/arm1176/start.o: In function `_end_ofs': /home/seedshope/work/bootloader/u-boot/arch/arm/cpu/arm1176/start.S:61: undefined reference to `_end' make: *** [/home/seedshope/work/bootloader/u-boot_obj/smdk6400/u-boot] Error 1

From: seedshope bocui107@gmail.com
Since we rename _end to __bss_end__, But we need add _end symbol for the end of u-boot image.
Signed-off-by: Zhong Hongbo bocui107@gmail.com
diff --git a/nand_spl/board/samsung/smdk6400/u-boot.lds b/nand_spl/board/samsung/smdk6400/u-boot.lds index 0153e0e..23c9913 100644 --- a/nand_spl/board/samsung/smdk6400/u-boot.lds +++ b/nand_spl/board/samsung/smdk6400/u-boot.lds @@ -67,6 +67,8 @@ SECTIONS *(.dynsym) }
+ _end = .; + .bss __rel_dyn_start (OVERLAY) : { __bss_start = .; *(.bss)
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-
seedshope