Fix lps and deep ps mode issues.
Add fw feature information for driver.

v2: fix wrong wow firmware, which was the same as the normal firmware
Signed-off-by: Chin-Yen Lee <timlee@realtek.com>
Signed-off-by: Tzu-En Huang <tehuang@realtek.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>