hwrng: timeriomem - add include guard to timeriomem-rng.h

Add a header include guard just in case.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Masahiro Yamada 2019-07-29 00:32:36 +09:00 • committed by Herbert Xu
commit 2ef540476e