uclibc: enable Linuxthreads for Blackfin

Enable Linuxthreads, a small binutils patch from upstream is
required.

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/uclibc/Config.in

@@ -59,7 +59,7 @@ choice
 	config BR2_PTHREADS
 		bool "linuxthreads"
 		select BR2_TOOLCHAIN_HAS_THREADS
-		depends on BR2_m68k || BR2_microblaze || BR2_arm || BR2_armeb || BR2_xtensa
+		depends on BR2_bfin || BR2_m68k || BR2_microblaze || BR2_arm || BR2_armeb || BR2_xtensa
 
 	config BR2_PTHREADS_NATIVE
 		bool "Native POSIX Threading (NPTL)"