p11-kit: add missing comment for dynamic library support

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/p11-kit/Config.in

@@ -11,6 +11,6 @@ config BR2_PACKAGE_P11_KIT
 
 	  http://p11-glue.freedesktop.org/p11-kit.html
 
-comment "p11-kit needs a toolchain w/ threads"
+comment "p11-kit needs a toolchain w/ threads, dynamic library"
 	depends on BR2_USE_MMU
-	depends on !BR2_TOOLCHAIN_HAS_THREADS
+	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_PREFER_STATIC_LIB