rtw88: refine the setting of rsvd pages for different firmware

The original setting of rsvd pages is compilcated and lead to
error for connecting to AP after resuming from pno mode.
We refine the setting based on different firmware and the link state
to avoid it.

Signed-off-by: Chin-Yen Lee <timlee@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210728014335.8785-3-pkshih@realtek.com