mdk3: fix compile on platforms with VFP

buildbot reported error on platforms with VFP (sunxi,imx6,omap):
mdk3 uses VFP register arguments, /tmp/ccBN2WMD.o does not
mdk3 uses VFP register arguments, osdep/libosdep.a(osdep.o) does not
mdk3 uses VFP register arguments, osdep/libosdep.a(network.o) does not
mdk3 uses VFP register arguments, osdep/libosdep.a(linux.o) does not
mdk3 uses VFP register arguments, osdep/libosdep.a(radiotap-parser.o) does not
mdk3 uses VFP register arguments, osdep/libosdep.a(common.o) does not
with failed to merge target specific data of file ...

CFLAGS were overwritten so append them instead

Signed-off-by: Dirk Neukirchen <dirkneukirchen@web.de>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
SVN-Revision: 40789

diff --git a/net/mdk3/patches/020-Makefile_honour_CFLAGS_for_VFP.patch b/net/mdk3/patches/020-Makefile_honour_CFLAGS_for_VFP.patch
new file mode 100644 (file)
index 0000000..9a420c2
--- /dev/null
+++ b/net/mdk3/patches/020-Makefile_honour_CFLAGS_for_VFP.patch
@@ -0,0 +1,8 @@
+--- a/Makefile
++++ b/Makefile
+@@ -1,4 +1,4 @@
+-CFLAGS                = -g -O3 -Wall -Wextra
++CFLAGS                += -g -O3 -Wall -Wextra
+ LINKFLAGS     = -lpthread
+ 
+ DESTDIR               =