.gitignore update

headers_install by default puts headers into usr/include/ .
They're auto-generated, so should be ignored.

Same for *.orig, *.rej .

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/.gitignore b/.gitignore
index 060a71d..8d15830 100644
--- a/.gitignore
+++ b/.gitignore
@@ -45,3 +45,6 @@
 
 # cscope files
 cscope.*
+
+*.orig
+*.rej