To allow ENA driver to configure LLQ size according to device's
default size which is now being published via ENA_ADMIN_GET_FEATURE
command, and updated ena_admin_def.h.
new definitions:
(1) entry_size_recommended field was introduced in the ENA_ADMIN_LLQ
feature struct and is being used to set LLQ size in case user did not specify otherwise.
(2) llq_feature_version enum was introduced to allow struct changes
within command - see (1)
From now on, when querying ENA_ADMIN_LLQ feature, we use current version
(ENA_ADMIN_LLQ_FEATURE_VERSION_1) instead of hard-coded 0.
Approved by: cperciva
MFC after: 2 weeks
Sponsored by: Amazon, Inc.