nptl: .gitignore generated pt-crt{i,n}.S

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libpthread/nptl/.gitignore

@@ -21,6 +21,8 @@ sysdeps/unix/sysv/linux/pthread-pi-defines.h
 sysdeps/pthread/crt[in].S
 sysdeps/pthread/defs.h
 sysdeps/pthread/pt-initfini.s
+sysdeps/pthread/pt-crti.S
+sysdeps/pthread/pt-crtn.S
 #
 # symlinks
 #