wifi: rtw89: 8852c: rfk: correct DPK settings

Some DPK settings are wrong, and causes bad TX performance occasionally.
So, fix them by internal suggestions.

Fixes: da4cea16 ("rtw89: 8852c: rfk: add DPK")
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20221209020940.9573-3-pkshih@realtek.com