Update to v4.15 kernel headers.

Test: NA.
Change-Id: Ic06b0506705a46ed11e3b9f212515d34147c8135
diff --git a/original/uapi/linux/version.h b/original/uapi/linux/version.h
index 235f52a..777a160 100644
--- a/original/uapi/linux/version.h
+++ b/original/uapi/linux/version.h
@@ -1,2 +1,2 @@
-#define LINUX_VERSION_CODE 265728
+#define LINUX_VERSION_CODE 265984
 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))