ath11k: don't use defines in hw_params

These defines are not used anywhere else so to avoid extra indirection add the
values directly to hw_params.

No functional changes. Compile tested only.

Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1592316055-24958-12-git-send-email-kvalo@codeaurora.org