Add repo specific items in .gitignore

Change-Id: I1f565fbd98f75a8e19fa355ed0f1e41700601351
Signed-off-by: Lei YU <mine260309@gmail.com>
diff --git a/.gitignore b/.gitignore
index cf124c5..602baba 100644
--- a/.gitignore
+++ b/.gitignore
@@ -45,3 +45,8 @@
 .deps
 *-libtool
 /test/utest
+/m4/*.m4
+/openpower-pnor-msl
+/org/openbmc/Associations/
+.dirstamp
+