access.2: Rework/relocate faccessat() NOTES text

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man2/access.2

@@ -161,6 +161,11 @@ If
 .I pathname
 is a symbolic link, do not dereference it:
 instead return information about the link itself.
+.PP
+See
+.BR openat (2)
+for an explanation of the need for
+.BR faccessat ().
 .SH "RETURN VALUE"
 On success (all requested permissions granted, or
 .I mode
@@ -319,12 +324,9 @@ Similar problems can occur to FUSE mounts.
 .\" 
 .\" 
 .SS faccessat ()
-See
-.BR openat (2)
-for an explanation of the need for
-.BR faccessat ().
-.SS Glibc notes
-The raw system call takes only the first three arguments.
+The raw
+.BR faccessat ()
+system call takes only the first three arguments.
 The
 .B AT_EACCESS
 and