wifi: rtw89: add DMA busy checking bits to chip info

8852B has less DMA channels, so its checking bits are different from other
chips.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220927062611.30484-4-pkshih@realtek.com