[source] tools: Select dosfstools for archs38

[LEDE Commits]

blogic pushed a commit to source.git, branch master:
https://git.lede-project.org/?p=source.git;a=commitdiff;h=c1f4040f709272bfd38db87fabb27637580e6e68

commit c1f4040f709272bfd38db87fabb27637580e6e68
Author: Alexey Brodkin <Alexey.Brodkin at synopsys.com>
AuthorDate: Fri Aug 19 07:58:11 2016 +0300

    tools: Select dosfstools for archs38
    
    In commit df4f41261cf9 ("archs38: Introduce images for SD-cards")
    we introduced building of SD-card images for ARC HS38-based boards.
    
    While building images mkdosfs utility is used.
    On machines I used for testing mentioned change this utility was
    already installed so I didn't figure-out that requirement.
    
    But thanks to Lede's autobuilder this missing bit was highlighted,
    see failed build job here:
    http://phase1.builds.lede-project.org/builders/archs38%2Fsd/builds/0/steps/images/logs/stdio
    
    Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
    Cc: John Crispin <john at phrozen.org>
    Cc: Jo-Philipp Wich <jo at mein.io>
---
 tools/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/Makefile b/tools/Makefile
index b412d26..abf5b04 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -36,7 +36,7 @@ tools-$(CONFIG_TARGET_orion_generic) += wrt350nv2-builder upslug2
 tools-$(CONFIG_powerpc) += upx
 tools-$(CONFIG_TARGET_x86) += qemu
 tools-$(CONFIG_TARGET_mxs) += elftosb sdimage
-tools-$(CONFIG_TARGET_brcm2708)$(CONFIG_TARGET_sunxi)$(CONFIG_TARGET_mxs)$(CONFIG_TARGET_omap) += mtools dosfstools
+tools-$(CONFIG_TARGET_brcm2708)$(CONFIG_TARGET_sunxi)$(CONFIG_TARGET_mxs)$(CONFIG_TARGET_omap)$(CONFIG_TARGET_archs38) += mtools dosfstools
 tools-$(CONFIG_TARGET_ar71xx) += lzma-old squashfs
 tools-$(CONFIG_USES_MINOR) += kernel2minor
 tools-y += lzma squashfs4