core: add core/crypto.mk with CFG_CRYPTO* flags

Moves CFG_CRYPTO* and _CFG_CRYPTO flags in core/lib/libtomcrypt/sub.mk
to core/crypto.mk.

Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Si

core: add core/crypto.mk with CFG_CRYPTO* flags

Moves CFG_CRYPTO* and _CFG_CRYPTO flags in core/lib/libtomcrypt/sub.mk
to core/crypto.mk.

Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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