source3/wscript: Fix detection of major/minor macros

These macros are only available via <sys/sysmacros.h> as of glibc
commit e16deca62e16f645213dffd4ecd1153c37765f17 ("[BZ #19239] Don't
include sys/sysmacros.h from sys/types.h."), which went into
glibc 2.28.

This is different from the usual C99 cleanups because it changes
the configure check result with existing compilers that usually
accept implicit function declarations.

Submitted upstream: <https://gitlab.com/samba-team/samba/-/merge_requests/2807>

diff --git a/source3/wscript b/source3/wscript
index 22be17a1a6fd1126..ca27deaa54381446 100644
--- a/source3/wscript
+++ b/source3/wscript
@@ -603,11 +603,11 @@ msg.msg_accrightslen = sizeof(fd);
     conf.CHECK_HEADERS('asm/types.h')
 
     conf.CHECK_CODE('dev_t dev; int i = major(dev); return 0', "HAVE_DEVICE_MAJOR_FN",
-                    headers='unistd.h sys/types.h',
+                    headers='sys/sysmacros.h unistd.h sys/types.h',
                     msg="Checking for major macro")
 
     conf.CHECK_CODE('dev_t dev; int i = minor(dev); return 0', "HAVE_DEVICE_MINOR_FN",
-                    headers='unistd.h sys/types.h',
+                    headers='sys/sysmacros.h unistd.h sys/types.h',
                     msg="Checking for minor macro")
 
     conf.CHECK_STRUCTURE_MEMBER('struct dirent', 'd_off',