util/intelp2m: Add output files to .gitignore

Change-Id: I50a783424b0d244eb824db9cd73738108f800003
Signed-off-by: Maxim Polyakov <max.senia.poliak@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45870
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/.gitignore b/.gitignore
index 190d3717..2fabfee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -105,6 +105,8 @@
 util/intelmetool/intelmetool
 util/inteltool/.dependencies
 util/inteltool/inteltool
+util/intelp2m/intelp2m
+util/intelp2m/generate/gpio.h
 util/intelvbttool/intelvbttool
 util/msrtool/Makefile
 util/msrtool/Makefile.deps