Merge branch 'queue_api-reduce-risk-of-name-collision-over-txq'

Gur Stavi says:

====================
queue_api: reduce risk of name collision over txq

Rename local variable in macros from txq to _txq.
When macro parameter get_desc is expended it is likely to have a txq
token that refers to a different txq variable at the caller's site.
====================

Link: https://patch.msgid.link/cover.1747559621.git.gur.stavi@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>