wifi: rtw89: phy: support EDCCA log per PHY

The registers of EDCCA log for PHY 1 isn't a simple offset, so define
them accordingly. Then the function use register set to access reports
according to phy_idx.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20250117072828.16728-8-pkshih@realtek.com