Simplify handling of locally trusted EE certs
Simplify handling of locally trusted EE certs

Though this might require one more walk of the list in some cases,
this avoid having a check for that deep inside check_parent().

NXPmicro/mbedtls,ARMmbed/mbedtls,Mbed-TLS/mbedtls,Mbed-TLS/mbedtls,Mbed-TLS/mbedtls,NXPmicro/mbedtls,NXPmicro/mbedtls,ARMmbed/mbedtls,NXPmicro/mbedtls,ARMmbed/mbedtls,ARMmbed/mbedtls,Mbed-TLS/mbedtls