gitignore: Adding more files to ignore

Adding more temporaries and IDE editor files

Tested: "git status" is now clean to me once again

Signed-off-by: Josh Lehan <krellan@google.com>
Change-Id: Ic51dfe9153fc27f4eebdec80ed46308d44f4c4bf
diff --git a/.gitignore b/.gitignore
index e60573c..346cf92 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,6 +25,7 @@
 config.guess
 config.h
 config.h.in
+config.h.in~
 config.log
 config.status
 config.sub
@@ -47,4 +48,7 @@
 *_unittest.trs
 test-suite.log
 
+# IDEs
+.idea/
+
 phosphor-pid-control.service