rust: uapi: Add ELF headers

Useful for drivers which need to parse firmware files or generate device
coredumps.

Signed-off-by: Asahi Lina <lina@asahilina.net>

Author: hoshinolina

rust/uapi/uapi_helper.h

@@ -9,6 +9,8 @@
 #include <uapi/asm-generic/ioctl.h>
 #include <uapi/drm/asahi_drm.h>
 #include <uapi/drm/drm.h>
+#include <uapi/linux/elf.h>
+#include <uapi/linux/elf-em.h>
 #include <uapi/linux/mdio.h>
 #include <uapi/linux/mii.h>
 #include <uapi/linux/ethtool.h>