[PATCH] blackfin: fix undefined reference with CONFIG_CMD_MAGICVAR

[Masahiro Yamada]

For Blackfin, C symbols are prefixed with '_'.

If CONFIG_CMD_MAGICVAR is enabled for Blackfin, the following error occurs:

commands/built-in.o: In function `do_magicvar':
commands/magicvar.c:(.text+0x3326): undefined reference to `__barebox_magicvar_start'
commands/magicvar.c:(.text+0x332a): undefined reference to `__barebox_magicvar_end'
commands/magicvar.c:(.text+0x332e): undefined reference to `__barebox_magicvar_start'
commands/magicvar.c:(.text+0x3332): undefined reference to `__barebox_magicvar_end'
make: *** [barebox] Error 1

Add '_' to __barebox_magicvar_start and __barebox_magicvar_end,
like the other symbols in this linker script.

Signed-off-by: Masahiro Yamada <yamada.m at jp.panasonic.com>
---

 arch/blackfin/boards/ipe337/barebox.lds.S | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/blackfin/boards/ipe337/barebox.lds.S b/arch/blackfin/boards/ipe337/barebox.lds.S
index 21a91ee..9bb7cc4 100644
--- a/arch/blackfin/boards/ipe337/barebox.lds.S
+++ b/arch/blackfin/boards/ipe337/barebox.lds.S
@@ -68,9 +68,9 @@ SECTIONS
 	.barebox_cmd : { BAREBOX_CMDS }
 	___barebox_cmd_end = .;
 
-	__barebox_magicvar_start = .;
+	___barebox_magicvar_start = .;
 	.barebox_magicvar : { BAREBOX_MAGICVARS }
-	__barebox_magicvar_end = .;
+	___barebox_magicvar_end = .;
 
 	___barebox_initcalls_start = .;
 	.barebox_initcalls : { INITCALLS }
-- 
1.9.1