gitignore usr/initramfs_data.cpio.bz2 and usr/initramfs_data.cpio.lzma

usr/initramfs_data.cpio.bz2 and usr/initramfs_data.cpio.lzma are binary
files should be ignored
Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>

usr/.gitignore

@@ -4,5 +4,7 @@
 gen_init_cpio
 initramfs_data.cpio
 initramfs_data.cpio.gz
+initramfs_data.cpio.bz2
+initramfs_data.cpio.lzma
 initramfs_list
 include