mbedtls: remove incorrect attribute type checker

S/MIME Capabilities (OID: 1.2.840.113549.1.9.15) attributes are
expected to be algorithms but neither data nor MS Inderect Data,
thus the checker for data type is incorrect.

This patch fixes a capsule authentication failure with PKCS#7
message that contains S/MIME capabilities, which formed by the EDK2
GenerateCapsule tool.

S/MIME Capabilities are not common attributes in an EFI capsule,
thus this failure cannot be reproduced with the capsules generated
via mkeficapsule.

Fixes: 7de0d155cce7 ("mbedtls: add PKCS7 parser porting layer")
Reported-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
1 file changed