ath10k: change max RX bundle size from 8 to 32 for sdio

The max bundle size support by firmware is 32, change it from 8 to 32
will help performance. This results in significant performance
improvement on RX path.

Tested with QCA6174 SDIO with firmware
WLAN.RMH.4.4.1-00017-QCARMSWPZ-1

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Patchwork-Id: 11160245
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>