Add .gitignore files for MIPS.
diff --git a/include/asm-mips/.gitignore b/include/asm-mips/.gitignore
new file mode 100644
index 0000000..4ec57ad
--- /dev/null
+++ b/include/asm-mips/.gitignore
@@ -0,0 +1 @@
+asm_offsets.h