s390/kexec_file: add generated files to .gitignore

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/purgatory/.gitignore b/arch/s390/purgatory/.gitignore
new file mode 100644
index 0000000..e9e66f1
--- /dev/null
+++ b/arch/s390/purgatory/.gitignore
@@ -0,0 +1,2 @@
+kexec-purgatory.c
+purgatory.ro