libtomcrypt: ECC code depends on ASN1 routines
libtomcrypt: ECC code depends on ASN1 routines

Fixes:
 $ make -j8 -s CFG_CRYPTO_{DSA,RSA}=n
 [...]libtomcrypt.a(ecc_sign_hash.o): In function `ecc_sign_hash':
 [...]ecc_sign_hash.c:166: undefined reference to
 `der_encode_sequence_multi'

Signed-off-by: Jerome Forissier <ced78d268b4c9a0a20a59a9feeebd2ad90da03d3@linaro.org>
Reviewed-by: Pascal Brand <0b55292d2562685bad4ce52d64f802e8f1cd299e@linaro.org>

matt2048/optee_os,cedric-chaumont-st-dev/optee_os,pascal-brand-st-dev/optee_os,Microsoft/optee_os,Microsoft/optee_os,matt2048/optee_os,pascal-brand-st-dev/optee_os,cedric-chaumont-st-dev/optee_os,Microsoft/optee_os,Microsoft/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os,Microsoft/optee_os,cedric-chaumont-st-dev/optee_os,pascal-brand-st-dev/optee_os,cedric-chaumont-st-dev/optee_os,matt2048/optee_os,matt2048/optee_os