site/common-uclibc: add predefined configure vars for coreutils

* this sets some configure vars which will be guessed
  false in cross-compile case for uclibc

(From OE-Core rev: c5337326005c975425b1eb2b62796e9b33f72ac3)

Signed-off-by: Henning Heinold <heinold@inf.fu-berlin.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/site/common-uclibc

@@ -31,6 +31,11 @@ bash_cv_sys_siglist=${bash_cv_sys_siglist=no}
 
 # coreutils
 fu_cv_sys_stat_statfs2_bsize=${fu_cv_sys_stat_statfs2_bsize=yes}
+gl_cv_func_gettimeofday_clobber=${gl_cv_func_gettimeofday_clobber=no}
+gl_cv_func_tzset_clobber=${gl_cv_func_tzset_clobber=no}
+gl_cv_func_gettimeofday_posix_signature=${gl_cv_func_gettimeofday_posix_signature=yes}
+ac_cv_func_posix_spawn=${ac_cv_func_posix_spawn=yes}
+ac_cv_func_posix_spawn_works=${ac_cv_func_posix_spawn_works=yes}
 
 # va_copy and _va_copy
 ac_cv_va_copy=${ac_cv_va_copy=yes}