wlcore: print active channel in the driver_state

Print current active channel/s and a role type for
that channel in the driver_state debugfs.

Signed-off-by: Victor Goldenshtein <victorg@ti.com>
wl18xx: increase the number of allowed BA sessions

Increase the WL18XX_RX_BA_MAX_SESSIONS to 8.
Update min firmware version requirements to
8.5.0.0.58.

Signed-off-by: Victor Goldenshtein <victorg@ti.com>