wifi: rtw89: 8852c: correct logic and restore PCI PHY EQ after device resume

wifi: rtw89: 8852c: correct logic and restore PCI PHY EQ after device resume

PCI PHY EQ value is missing after card off/on, so update the value after
device resume. The original commit only updates once at probe stage, which
could lead problem after suspend/resume.

The logic should be read a value from one register and write to another
register with a mask to avoid affecting unrelated bits.

Fixes: a78d33a1286c ("wifi: rtw89: 8852c: disable PCI PHY EQ to improve compatibility")
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://msgid.link/20240521040139.20311-1-pkshih@realtek.com