zte's code,first commit

Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/lib/reciprocal_div.c b/ap/os/linux/linux-3.4.x/lib/reciprocal_div.c
new file mode 100644
index 0000000..75510e9
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/lib/reciprocal_div.c
@@ -0,0 +1,11 @@
+#include <asm/div64.h>
+#include <linux/reciprocal_div.h>
+#include <linux/export.h>
+
+u32 reciprocal_value(u32 k)
+{
+	u64 val = (1LL << 32) + (k - 1);
+	do_div(val, k);
+	return (u32)val;
+}
+EXPORT_SYMBOL(reciprocal_value);