openipmi uses the pthread_condattr_setclock() function, which is only
available with the NPTL thread implementation.
Fixes:
  http://autobuild.buildroot.net/results/
fc4084f8d1ff3fe98066c7cc051c2127bbe77ec5/
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
        bool "openipmi"
        depends on BR2_USE_MMU # fork()
        depends on !BR2_STATIC_LIBS # dlopen()
-       depends on BR2_TOOLCHAIN_HAS_THREADS
+       depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL
        select BR2_PACKAGE_POPT
        select BR2_PACKAGE_NCURSES
        help
 
          http://openipmi.sourceforge.net
 
-comment "openipmi needs a toolchain w/ dynamic library, threads"
+comment "openipmi needs a toolchain w/ dynamic library, NPTL"
        depends on BR2_USE_MMU
-       depends on BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HAS_THREADS
+       depends on BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HAS_THREADS_NPTL