net: smc91x: Remove stale documentation reference

smc9.rst was removed with the separate smc91c92 driver. Stop
pointing SMC91X users to the nonexistent file.

Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260905051944.11604-1-kmehltretter@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Karl Mehltretter 2026-09-05 07:19:44 +02:00 • committed by Jakub Kicinski
commit 789842b671