COMPMID-1188: Fixes LSTM IO dimension requirements.

Change-Id: Iee92ccce6422368c19173174e6f58e7aada12233
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/140143
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
2 files changed