Add .gitignore

Change-Id: I09e1ddbf53dc239f07f742767420d0c4f0bdfb90
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e369468
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,22 @@
+*.[oa]
+*~
+.*~
+.depend
+*_autogenerated.h
+*.bin
+*.srec
+*.map
+/.stamp_*
+examples/hello_world
+tools/bmp_logo
+tools/crc32.c
+tools/envcrc
+tools/environment.c
+tools/gen_eth_addr
+tools/img2srec
+tools/mkimage
+/u-boot
+include/asm*
+include/bmp_logo.h
+include/config.h
+include/config.mk