Since CRYPTO_DRBG_MENU was added in r48277, CRYPTO_DRBG_HMAC is missing.
It does not appear in kernel_menuconfig and defaults to yes, so enable
it in crypto-rng as well and add dependencies to HMAC and SHA256.
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
SVN-Revision: 48341