kernel/modules: add missing symbol for crypto-rng

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

package/kernel/linux/modules/crypto.mk

@@ -100,10 +100,11 @@ $(eval $(call KernelPackage,crypto-wq))
 
 define KernelPackage/crypto-rng
   TITLE:=CryptoAPI random number generation
-  DEPENDS:=+kmod-crypto-hash
+  DEPENDS:=+kmod-crypto-hash +kmod-crypto-hmac +kmod-crypto-sha256
   KCONFIG:= \
-	CONFIG_CRYPTO_DRBG_MENU \
 	CONFIG_CRYPTO_DRBG \
+	CONFIG_CRYPTO_DRBG_HMAC=y \
+	CONFIG_CRYPTO_DRBG_MENU \
 	CONFIG_CRYPTO_JITTERENTROPY \
 	CONFIG_CRYPTO_RNG2
   FILES:= \