cppzmq/czmq: Update comment for needs threads support

Comment 7e37d235f "zeromq: needs threads" adds BR2_TOOLCHAIN_HAS_THREADS
dependency but forgot to add corresponding comment for cppzmq and czmq. Fix it.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/cppzmq/Config.in

@@ -11,6 +11,6 @@ config BR2_PACKAGE_CPPZMQ
 
 	  http://github.com/zeromq/cppzmq
 
-comment "cppzmq needs a toolchain w/ C++, IPv6, largefile, wchar"
+comment "cppzmq needs a toolchain w/ C++, IPv6, largefile, wchar, threads"
 	depends on !(BR2_INSTALL_LIBSTDCPP && BR2_INET_IPV6 && BR2_LARGEFILE \
 		&& BR2_USE_WCHAR && BR2_TOOLCHAIN_HAS_THREADS)

package/czmq/Config.in

@@ -15,6 +15,6 @@ config BR2_PACKAGE_CZMQ
 
 	  http://czmq.zeromq.org/
 
-comment "czmq needs a toolchain w/ C++, IPv6, largefile, wchar"
+comment "czmq needs a toolchain w/ C++, IPv6, largefile, wchar, threads"
 	depends on !(BR2_INSTALL_LIBSTDCPP && BR2_INET_IPV6 && BR2_LARGEFILE \
 		&& BR2_USE_WCHAR && BR2_TOOLCHAIN_HAS_THREADS)