Merge bfin add_ldflags lines.

Originally committed as revision 8064 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -1330,8 +1330,7 @@ if test $cpu != "generic"; then
         ;;
         bf*) #bf531 bf532 bf533 bf561 bf5xx all get this config
             add_cflags "-mfdpic"
-            add_ldflags "-mfdpic"
-            add_ldflags "-Wl,--defsym,__stacksize=0x40000"
+            add_ldflags "-mfdpic -Wl,--defsym,__stacksize=0x40000"
         ;;
         *)
         echo "WARNING: Unknown CPU \"$cpu\", ignored."